diff --git a/localedata/locales/af_ZA b/localedata/locales/af_ZA
index 143ad75..29223d5 100644
--- a/localedata/locales/af_ZA
+++ b/localedata/locales/af_ZA
@@ -275,7 +275,7 @@ country_car   "<U005A><U0041>"
 
 % ISO 2108
 % http://www.isbn-international.org/html/prefix/prefa.htm
-country_isbn  0
+country_isbn  "<U0030>"
 
 % ISO 639 language abbreviations:
 % 639-1 2 letter, 639-2 3 letter terminology
diff --git a/localedata/locales/ak_GH b/localedata/locales/ak_GH
index 159acc8..0f5a667 100644
--- a/localedata/locales/ak_GH
+++ b/localedata/locales/ak_GH
@@ -195,7 +195,7 @@ country_ab2  "<U0047><U0048>"
 % GHA
 country_ab3  "<U0047><U0048><U0041>"
 country_num  288
-country_isbn 9964
+country_isbn "<U0039><U0039><U0036><U0034>"
 % Akan
 lang_name    "<U0041><U006B><U0061><U006E>"
 % ak
diff --git a/localedata/locales/bg_BG b/localedata/locales/bg_BG
index 74e5ad4..4a62159 100644
--- a/localedata/locales/bg_BG
+++ b/localedata/locales/bg_BG
@@ -266,7 +266,7 @@ country_ab2  "<U0042><U0047>"
 country_ab3  "<U0042><U0047><U0052>"
 country_num   100
 country_car  "<U0042><U0047>"
-country_isbn  954
+country_isbn  "<U0039><U0035><U0034>"
 % Ð±ÑŠÐ»Ð³Ð°Ñ€ÑÐºÐ¸ ÐµÐ·Ð¸Ðº
 lang_name    "<U0431><U044A><U043B><U0433><U0430><U0440><U0441><U043A><U0438><U0020><U0435><U0437><U0438><U043A>"
 lang_ab      "<U0062><U0067>"
diff --git a/localedata/locales/cmn_TW b/localedata/locales/cmn_TW
index a332659..01838ed 100644
--- a/localedata/locales/cmn_TW
+++ b/localedata/locales/cmn_TW
@@ -200,7 +200,7 @@ country_ab2  "<U0054><U0057>"
 % TWN
 country_ab3  "<U0054><U0057><U004E>"
 country_num  158
-country_isbn 957
+country_isbn "<U0039><U0035><U0037>"
 % æ¼¢èªžå®˜è©±
 lang_name    "<U6F22><U8A9E><U5B98><U8A71>"
 % cmn
diff --git a/localedata/locales/cy_GB b/localedata/locales/cy_GB
index 66298e0..31e1e89 100644
--- a/localedata/locales/cy_GB
+++ b/localedata/locales/cy_GB
@@ -40,7 +40,7 @@ country_name "<U0043><U0079><U006D><U0072><U0075>"
 country_ab2 "<U0047><U0042>"
 country_ab3 "<U0047><U0042><U0052>"
 country_num 826
-country_isbn 0
+country_isbn "<U0030>"
 country_car "<U0047><U0042>"
 lang_name "<U0043><U0079><U006D><U0072><U0061><U0065><U0067>"
 lang_ab "<U0063><U0079>"
diff --git a/localedata/locales/de_DE b/localedata/locales/de_DE
index e2704a7..26d83c8 100644
--- a/localedata/locales/de_DE
+++ b/localedata/locales/de_DE
@@ -193,7 +193,7 @@ country_ab2   "<U0044><U0045>"
 country_ab3   "<U0044><U0045><U0055>"
 country_num   276
 country_car   "<U0044>"
-country_isbn  3
+country_isbn  "<U0033>"
 % Deutsch
 lang_name     "<U0044><U0065><U0075><U0074><U0073><U0063><U0068>"
 % de
diff --git a/localedata/locales/en_NG b/localedata/locales/en_NG
index 364b549..f6d4005 100644
--- a/localedata/locales/en_NG
+++ b/localedata/locales/en_NG
@@ -270,7 +270,7 @@ country_car   "<U0057><U0041><U004E>"
 
 % ISO 2108
 % http://www.isbn-international.org/
-country_isbn  978
+country_isbn  "<U0039><U0037><U0038>"
 
 % ISO 639 language abbreviations:
 % 639-1 2 letter, 639-2 3 letter terminology
diff --git a/localedata/locales/en_US b/localedata/locales/en_US
index d79c228..08154bc 100644
--- a/localedata/locales/en_US
+++ b/localedata/locales/en_US
@@ -164,7 +164,7 @@ country_ab3   "<U0055><U0053><U0041>"
 country_num   840
 % USA
 country_car   "<U0055><U0053><U0041>"
-country_isbn  0
+country_isbn  "<U0030>"
 % English
 lang_name     "<U0045><U006E><U0067><U006C><U0069><U0073><U0068>"
 % en
diff --git a/localedata/locales/en_ZA b/localedata/locales/en_ZA
index 294b0a3..263c718 100644
--- a/localedata/locales/en_ZA
+++ b/localedata/locales/en_ZA
@@ -338,7 +338,7 @@ country_car   "<U005A><U0041>"
 
 % ISO 2108
 % http://www.isbn-international.org/html/prefix/prefa.htm
-country_isbn  0
+country_isbn  "<U0030>"
 
 % ISO 639 language abbreviations:
 % 639-1 2 letter, 639-2 3 letter terminology
diff --git a/localedata/locales/es_CR b/localedata/locales/es_CR
index b5dec84..18b10f9 100644
--- a/localedata/locales/es_CR
+++ b/localedata/locales/es_CR
@@ -155,7 +155,7 @@ postal_fmt    "<U0025><U0066><U0025><U004E><U0025><U0061><U0025><U004E>/
 country_name  "<U0043><U006F><U0073><U0074><U0061><U0020><U0052><U0069><U0063><U0061>"
 country_post  "<U0043><U0052>"
 country_car   "<U0043><U0052>"
-country_isbn  "9930,9977,9968"
+country_isbn  "<U0039><U0039><U0033><U0030><U002C><U0039><U0039><U0037><U0037><U002C><U0039><U0039><U0036><U0038>"
 country_ab2   "<U0043><U0052>"
 country_ab3   "<U0043><U0052><U0049>"
 country_num   188
diff --git a/localedata/locales/es_US b/localedata/locales/es_US
index 6b808d5..357102e 100644
--- a/localedata/locales/es_US
+++ b/localedata/locales/es_US
@@ -208,7 +208,7 @@ country_ab2   "<U0055><U0053>"
 country_ab3   "<U0055><U0053><U0041>"
 country_num   840
 country_car   "<U0055><U0053><U0041>"
-country_isbn  0
+country_isbn  "<U0030>"
 % EspaÃ±ol
 lang_name     "<U0045><U0073><U0070><U0061><U00F1><U006F><U006C>"
 % es
diff --git a/localedata/locales/fi_FI b/localedata/locales/fi_FI
index e87878c..6ba91ba 100644
--- a/localedata/locales/fi_FI
+++ b/localedata/locales/fi_FI
@@ -253,7 +253,7 @@ country_num 246
 country_name "<U0053><U0075><U006F><U006D><U0069>"
 country_post "<U0046><U0049>"
 country_car  "<U0046><U0049><U004E>"
-country_isbn 952
+country_isbn "<U0039><U0035><U0032>"
 % suomi
 lang_name    "<U0073><U0075><U006F><U006D><U0069>"
 lang_ab      "<U0066><U0069>"
diff --git a/localedata/locales/fy_DE b/localedata/locales/fy_DE
index 046d775..e68ed7d 100644
--- a/localedata/locales/fy_DE
+++ b/localedata/locales/fy_DE
@@ -48,7 +48,7 @@ country_ab3   "<U0044><U0045><U0055>"
 % D
 country_car   "<U0044>"
 country_num 276
-country_isbn "3"
+country_isbn "<U0033>"
 % FIXME country_name in Low Saxon ?
 % Frysk
 lang_name    "<U0046><U0072><U0079><U0073><U006B>"
diff --git a/localedata/locales/gd_GB b/localedata/locales/gd_GB
index 41943f5..765f9df 100644
--- a/localedata/locales/gd_GB
+++ b/localedata/locales/gd_GB
@@ -148,7 +148,7 @@ country_ab3  "<U0047><U0042><U0052>"
 country_num  826
 % GB
 country_car  "<U0047><U0042>"
-country_isbn 0
+country_isbn "<U0030>"
 % GÃ idhlig
 lang_name    "<U0047><U00E0><U0069><U0064><U0068><U006C><U0069><U0067>"
 % gd
diff --git a/localedata/locales/ha_NG b/localedata/locales/ha_NG
index 6ea1a88..c5d1f77 100644
--- a/localedata/locales/ha_NG
+++ b/localedata/locales/ha_NG
@@ -287,7 +287,7 @@ country_car   "<U0057><U0041><U004E>"
 
 % ISO 2108
 % http://www.isbn-international.org/
-country_isbn  978
+country_isbn  "<U0039><U0037><U0038>"
 
 % ISO 639 language abbreviations:
 % 639-1 2 letter, 639-2 3 letter terminology
diff --git a/localedata/locales/hak_TW b/localedata/locales/hak_TW
index 454ebad..543206a 100644
--- a/localedata/locales/hak_TW
+++ b/localedata/locales/hak_TW
@@ -199,7 +199,7 @@ country_ab2  "<U0054><U0057>"
 % TWN
 country_ab3  "<U0054><U0057><U004E>"
 country_num  158
-country_isbn 957
+country_isbn "<U0039><U0035><U0037>"
 % æ¼¢èªžå®¢å®¶èªž
 lang_name    "<U6F22><U8A9E><U5BA2><U5BB6><U8A9E>"
 % hak
diff --git a/localedata/locales/hsb_DE b/localedata/locales/hsb_DE
index db130fd..b177663 100644
--- a/localedata/locales/hsb_DE
+++ b/localedata/locales/hsb_DE
@@ -2212,7 +2212,7 @@ country_ab2   "<U0044><U0045>"
 country_ab3   "<U0044><U0045><U0055>"
 country_num   276
 country_car   "<U0044>"
-country_isbn  3
+country_isbn  "<U0033>"
 lang_name     "<U0048><U006F><U0072><U006E><U006A><U006F><U0073><U0065>/
 <U0072><U0062><U0161><U0107><U0069><U006E><U0061>"
 lang_ab      ""
diff --git a/localedata/locales/ht_HT b/localedata/locales/ht_HT
index 66ae10b..8f12153 100644
--- a/localedata/locales/ht_HT
+++ b/localedata/locales/ht_HT
@@ -193,7 +193,7 @@ country_ab2  "<U0048><U0054>"
 % HTI
 country_ab3  "<U0048><U0054><U0049>"
 country_num  332
-country_isbn 99935
+country_isbn "<U0039><U0039><U0039><U0033><U0035>"
 % RH
 country_car  "<U0052><U0048>"
 %
diff --git a/localedata/locales/ia_FR b/localedata/locales/ia_FR
index 722cc6e..64248c8 100644
--- a/localedata/locales/ia_FR
+++ b/localedata/locales/ia_FR
@@ -128,7 +128,7 @@ country_post "<U0046>"
 country_ab2 "<U0046><U0052>"
 country_ab3 "<U0046><U0052><U0041>"
 country_num 250
-country_isbn 2
+country_isbn "<U0032>"
 country_car "<U0046>"
 lang_name "<U0049><U006E><U0074><U0065><U0072><U006C><U0069><U006E><U0067><U0075><U0061>"
 
diff --git a/localedata/locales/ig_NG b/localedata/locales/ig_NG
index 8b1a48b..32f0f08 100644
--- a/localedata/locales/ig_NG
+++ b/localedata/locales/ig_NG
@@ -484,7 +484,7 @@ country_car   "<U0057><U0041><U004E>"
 
 % ISO 2108
 % http://www.isbn-international.org/
-country_isbn  978
+country_isbn  "<U0039><U0037><U0038>"
 
 % ISO 639 language abbreviations:
 % 639-1 2 letter, 639-2 3 letter terminology
diff --git a/localedata/locales/ka_GE b/localedata/locales/ka_GE
index 459c467..ad47bae 100644
--- a/localedata/locales/ka_GE
+++ b/localedata/locales/ka_GE
@@ -45,7 +45,7 @@ country_ab3 "GEO"
 country_num 268
 % GE
 country_car    "<U0047><U0045>"
-country_isbn "99928"
+country_isbn "<U0039><U0039><U0039><U0032><U0038>"
 % áƒ¥áƒáƒ áƒ—áƒ£áƒšáƒ˜
 lang_name    "<U10E5><U10D0><U10E0><U10D7><U10E3><U10DA><U10D8>"
 % ka
diff --git a/localedata/locales/ku_TR b/localedata/locales/ku_TR
index d974bfb..44e2528 100644
--- a/localedata/locales/ku_TR
+++ b/localedata/locales/ku_TR
@@ -206,7 +206,7 @@ country_post "TR"
 country_ab2  "TR"
 country_ab3  "TUR"
 country_num  792
-country_isbn 975
+country_isbn "<U0039><U0037><U0035>"
 % TR
 country_car    "<U0054><U0052>"
 % "kurdi"
diff --git a/localedata/locales/lb_LU b/localedata/locales/lb_LU
index a74e162..36cb98e 100644
--- a/localedata/locales/lb_LU
+++ b/localedata/locales/lb_LU
@@ -175,7 +175,7 @@ country_ab2   "<U004C><U0055>"
 country_ab3   "<U004C><U0055><U0058>"
 country_num   442
 country_car   "<U004C>"
-country_isbn  2
+country_isbn  "<U0032>"
 lang_name     "<U004C><U00EB><U0074><U007A><U0065><U0062><U0075><U0065>/
 <U0072><U0067><U0065><U0073><U0063><U0068>"
 lang_ab       "<U006C><U0062>"
diff --git a/localedata/locales/li_BE b/localedata/locales/li_BE
index 5a89754..e917802 100644
--- a/localedata/locales/li_BE
+++ b/localedata/locales/li_BE
@@ -47,7 +47,7 @@ country_ab2   "<U0042><U0045>"
 country_ab3   "<U0042><U0045><U004C>"
 country_car   "<U0042>"
 country_num 56
-%FIXME country_isbn "2"
+country_isbn "<U0032>"
 % LÃ¨mbÃ¶rgs
 lang_name    "<U004C><U00E8><U006D><U0062><U00F6><U0072><U0067><U0073>"
 lang_ab "<U006C><U0069>"
diff --git a/localedata/locales/li_NL b/localedata/locales/li_NL
index b07c4a4..b92acbf 100644
--- a/localedata/locales/li_NL
+++ b/localedata/locales/li_NL
@@ -47,7 +47,7 @@ country_ab2   "<U004E><U004C>"
 country_ab3   "<U004E><U004C><U0044>"
 country_car   "<U004E><U004C>"
 country_num 528
-%FIXME country_isbn "2"
+country_isbn "<U0033>"
 % LÃ¨mbÃ¶rgs
 lang_name    "<U004C><U00E8><U006D><U0062><U00F6><U0072><U0067><U0073>"
 lang_ab "<U006C><U0069>"
diff --git a/localedata/locales/lzh_TW b/localedata/locales/lzh_TW
index 73b4897..0f26ecf 100644
--- a/localedata/locales/lzh_TW
+++ b/localedata/locales/lzh_TW
@@ -234,7 +234,7 @@ country_ab2  "<U0054><U0057>"
 % TWN
 country_ab3  "<U0054><U0057><U004E>"
 country_num  158
-country_isbn 957
+country_isbn "<U0039><U0035><U0037>"
 % æ¼¢èªžæ–‡è¨€
 lang_name    "<U6F22><U8A9E><U6587><U8A00>"
 % lzh
diff --git a/localedata/locales/mk_MK b/localedata/locales/mk_MK
index b751679..31653e7 100644
--- a/localedata/locales/mk_MK
+++ b/localedata/locales/mk_MK
@@ -152,7 +152,7 @@ country_ab2 "<U004d><U004b>"
 country_ab3 "<U004d><U004b><U0044>"
 country_car "<U004d><U004b>"
 country_num 807
-country_isbn "9989"
+country_isbn "<U0039><U0039><U0038><U0039>"
 % Ð¼Ð°ÐºÐµÐ´Ð¾Ð½ÑÐºÐ¸ Ñ˜Ð°Ð·Ð¸Ðº
 lang_name    "<U043C><U0430><U043A><U0435><U0434><U043E><U043D><U0441><U043A>/<U0438><U0020><U0458><U0430><U0437><U0438><U043A>"
 lang_ab "<U006d><U006b>"
diff --git a/localedata/locales/mn_MN b/localedata/locales/mn_MN
index 6649537..acb32da 100644
--- a/localedata/locales/mn_MN
+++ b/localedata/locales/mn_MN
@@ -254,7 +254,7 @@ country_ab2   "<U004D><U004E>"
 country_ab3   "<U004D><U004E><U0047>"
 country_num   496
 country_car   "<U004D><U0047><U004C>"
-country_isbn  99929
+country_isbn  "<U0039><U0039><U0039><U0032><U0039>"
 % ÐœÐ¾Ð½Ð³Ð¾Ð» Ñ…ÑÐ»
 lang_name    "<U041C><U043E><U043D><U0433><U043E><U043B><U0020><U0445><U044D><U043B>"
 lang_ab       "<U006D><U006E>"
diff --git a/localedata/locales/nan_TW b/localedata/locales/nan_TW
index 0c11174..08bbb2d 100644
--- a/localedata/locales/nan_TW
+++ b/localedata/locales/nan_TW
@@ -200,7 +200,7 @@ country_ab2  "<U0054><U0057>"
 % TWN
 country_ab3  "<U0054><U0057><U004E>"
 country_num  158
-country_isbn 957
+country_isbn "<U0039><U0035><U0037>"
 % æ¼¢èªžé–©å—èªž
 lang_name    "<U6F22><U8A9E><U95A9><U5357><U8A9E>"
 % nan
diff --git a/localedata/locales/nds_DE b/localedata/locales/nds_DE
index e1ab6e0..81d0ad4 100644
--- a/localedata/locales/nds_DE
+++ b/localedata/locales/nds_DE
@@ -46,7 +46,7 @@ country_ab2   "<U0044><U0045>"
 country_ab3   "<U0044><U0045><U0055>"
 country_car   "<U0044>"
 country_num 276
-country_isbn "3"
+country_isbn "<U0033>"
 lang_name "<U004E><U0065><U0064><U0064><U0065><U0072><U0073><U0061><U0073><U0073><U0069><U0073><U0063><U0068>"
 %lang_ab
 lang_term "<U006E><U0064><U0073>"
diff --git a/localedata/locales/nds_NL b/localedata/locales/nds_NL
index 14051f6..c59d3e6 100644
--- a/localedata/locales/nds_NL
+++ b/localedata/locales/nds_NL
@@ -45,7 +45,7 @@ country_ab2 "<U004E><U004C>"
 country_ab3 "<U004E><U004C><U0044>"
 country_car "<U004E><U004C>"
 country_num 528
-country_isbn "3"
+country_isbn "<U0033>"
 lang_name "<U004E><U0065><U0064><U0064><U0065><U0072><U0073><U0061><U0073><U0073><U0069><U0073><U0063><U0068>"
 %lang_ab
 lang_term "<U006E><U0064><U0073>"
diff --git a/localedata/locales/oc_FR b/localedata/locales/oc_FR
index 10e3a03..5a9fca6 100644
--- a/localedata/locales/oc_FR
+++ b/localedata/locales/oc_FR
@@ -44,7 +44,7 @@ country_post "F"
 country_ab2 "FR"
 country_ab3 "FRA"
 country_num 250
-country_isbn "2"
+country_isbn "<U0032>"
 country_car "F"
 % Occitan
 lang_name    "<U004F><U0063><U0063><U0069><U0074><U0061><U006E>"
diff --git a/localedata/locales/pap_AN b/localedata/locales/pap_AN
index 63262a5..f3c5a96 100644
--- a/localedata/locales/pap_AN
+++ b/localedata/locales/pap_AN
@@ -49,7 +49,7 @@ postal_fmt "<U0025><U0064><U0025><U004E><U0025><U0066><U0025><U004E><U0025><U006
 country_ab2 "<U0041><U004E>"
 country_ab3 "<U0041><U004E><U0054>"
 country_num 530
-country_isbn "99904"
+country_isbn "<U0039><U0039><U0039><U0030><U0034>"
 country_car "<U004E><U0041>"
 % lang_ab
 lang_term "<U0070><U0061><U0070>"
diff --git a/localedata/locales/ro_RO b/localedata/locales/ro_RO
index 610f071..ab41ab7 100644
--- a/localedata/locales/ro_RO
+++ b/localedata/locales/ro_RO
@@ -377,7 +377,7 @@ country_car "<U0052><U004F>"
 % ISBN code is 973
 % see: http://homepages.cwi.nl/~dik/english/codes/isbn.html
 % and other sources
-country_isbn 973
+country_isbn "<U0039><U0037><U0033>"
 % FIXME: is it really RO?
 country_post "<U0052><U004F>"
 % language names are not capitalized in Romanian ( roma>na( )
diff --git a/localedata/locales/sq_MK b/localedata/locales/sq_MK
index 9d6aef7..9d3957e 100644
--- a/localedata/locales/sq_MK
+++ b/localedata/locales/sq_MK
@@ -100,7 +100,7 @@ country_ab2 "<U004d><U004b>"
 country_ab3 "<U004d><U004b><U0044>"
 country_car "<U004d><U004b>"
 country_num 807
-country_isbn "9989"
+country_isbn "<U0039><U0039><U0038><U0039>"
 % shqip
 lang_name    "<U0073><U0068><U0071><U0069><U0070>"
 % sq
diff --git a/localedata/locales/sv_FI b/localedata/locales/sv_FI
index fca2935..007828e 100644
--- a/localedata/locales/sv_FI
+++ b/localedata/locales/sv_FI
@@ -143,7 +143,7 @@ country_num 246
 country_name "<U0046><U0069><U006E><U006C><U0061><U006E><U0064>"
 country_post "<U0046><U0049>"
 country_car  "<U0046><U0049><U004E>"
-country_isbn 952
+country_isbn "<U0039><U0035><U0032>"
 % svenska
 lang_name    "<U0073><U0076><U0065><U006E><U0073><U006B><U0061>"
 lang_ab      "<U0073><U0076>"
diff --git a/localedata/locales/tr_CY b/localedata/locales/tr_CY
index e2e6936..8665dfa 100644
--- a/localedata/locales/tr_CY
+++ b/localedata/locales/tr_CY
@@ -98,7 +98,7 @@ country_name	"<U004E><U006F><U0072><U0074><U0068><U0065><U0072><U006E>/
 country_post	"<U0054><U0052>"
 % TR
 country_car	"<U0054><U0052>"
-country_isbn	975
+country_isbn	"<U0039><U0037><U0035>"
 country_num	792
 % TR
 country_ab2	"<U0054><U0052>"
diff --git a/localedata/locales/tr_TR b/localedata/locales/tr_TR
index f54be2c..82c8699 100644
--- a/localedata/locales/tr_TR
+++ b/localedata/locales/tr_TR
@@ -3587,7 +3587,7 @@ country_name	"<U0054><U0075><U0072><U006B><U0065><U0079>"
 country_post	"<U0054><U0052>"
 % TR
 country_car	"<U0054><U0052>"
-country_isbn	975
+country_isbn	"<U0039><U0037><U0035>"
 country_num	792
 % TR
 country_ab2	"<U0054><U0052>"
diff --git a/localedata/locales/uk_UA b/localedata/locales/uk_UA
index 511f004..a910ec6 100644
--- a/localedata/locales/uk_UA
+++ b/localedata/locales/uk_UA
@@ -1246,7 +1246,7 @@ country_num   804
 country_car   "<U0055><U0041>"
 
 % ISBN code, for books.
-country_isbn  966
+country_isbn  "<U0039><U0036><U0036>"
 
 % Two-letter abbreviation of the language, see ISO 639.
 lang_ab       "<U0075><U006B>"
diff --git a/localedata/locales/unm_US b/localedata/locales/unm_US
index 482a7da..3467b8c 100644
--- a/localedata/locales/unm_US
+++ b/localedata/locales/unm_US
@@ -150,7 +150,7 @@ country_ab3   "<U0055><U0053><U0041>"
 country_num   840
 % USA
 country_car   "<U0055><U0053><U0041>"
-country_isbn  0
+country_isbn  "<U0030>"
 % lang_name     ""
 % lang_ab       ""
 % unm
diff --git a/localedata/locales/wa_BE b/localedata/locales/wa_BE
index a2fb3be..21979c5 100644
--- a/localedata/locales/wa_BE
+++ b/localedata/locales/wa_BE
@@ -42,7 +42,7 @@ country_post "B"
 country_ab2 "BE"
 country_ab3 "BEL"
 country_num 56
-country_isbn "2"
+country_isbn "<U0032>"
 % B
 country_car  "<U0042>"
 lang_name "<U0057><U0061><U006C><U006F><U006E>"
diff --git a/localedata/locales/wae_CH b/localedata/locales/wae_CH
index 5f11613..264aa63 100644
--- a/localedata/locales/wae_CH
+++ b/localedata/locales/wae_CH
@@ -236,6 +236,6 @@ postal_fmt    "<U0025><U0066><U0025><U004E><U0025><U0061><U0025><U004E>/
 country_ab2   "<U0043><U0048>"
 country_ab3   "<U0043><U0048><U0045>"
 country_num   756
-country_isbn  3
+country_isbn  "<U0033>"
 
 END LC_ADDRESS
diff --git a/localedata/locales/yi_US b/localedata/locales/yi_US
index 97ed218..7c2259b 100644
--- a/localedata/locales/yi_US
+++ b/localedata/locales/yi_US
@@ -50,7 +50,7 @@ country_num 840
 % USA
 country_car   "<U0055><U0053><U0041>"
 % FIXME Check which isbn for Yiddish in USA
-country_isbn "0"
+country_isbn "<U0030>"
 lang_name "<U05D9><U05D9><U05B4><U05D3><U05D9><U05E9>"
 % yi
 lang_ab      "<U0079><U0069>"
diff --git a/localedata/locales/yo_NG b/localedata/locales/yo_NG
index c88ca6e..37a948e 100644
--- a/localedata/locales/yo_NG
+++ b/localedata/locales/yo_NG
@@ -491,7 +491,7 @@ country_car   "<U0057><U0041><U004E>"
 
 % ISO 2108
 % http://www.isbn-international.org/
-country_isbn  978
+country_isbn  "<U0039><U0037><U0038>"
 
 % ISO 639 language abbreviations:
 % 639-1 2 letter, 639-2 3 letter terminology
