ISBN 9630071888 hat failed the check­sum digit test.

The following 10 formally correct ISBNs were determined. Starting from these ISBNs the value 9630071888 that you input could have resulted frome one error (error in one digit or transposition of two digits.) You can now check using the links given for the catalogs of, and whether any book is listed for the respective URL. To the home page
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ISBN prefix group: English language
ISBNas­su­med er­rorCatalogs for checking
0-630-07188-8first digit was chan­ged.
ISBN prefix group: Greece
ISBNas­su­med er­rorCatalogs for checking
960-00-7188-8third digit was chan­ged.
ISBN prefix group: Hungary
ISBNas­su­med er­rorCatalogs for checking
963-00-0188-8sixth digit was chan­ged.
963-00-7108-8eighth digit was chan­ged.
963-00-7187-8ninth digit was chan­ged.
963-00-7188-6tenth digit was chan­ged.
963-00-7688-8seven­th digit was chan­ged.
963-07-7188-8fifth digit was chan­ged.
963-607-188-8fourth digit was chan­ged.
ISBN prefix group: Romania
ISBNas­su­med er­rorCatalogs for checking
973-0-07188-8second digit was chan­ged.

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