ISBN 8023977584 hat failed the check­sum digit test.

The following 14 formally correct ISBNs were determined. Starting from these ISBNs the value 8023977584 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 amazon.co.uk, amazon.com and amazon.de whether any book is listed for the respective URL. To the home page
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ISBN prefix group: French language
ISBNas­su­med er­rorCatalogs for checking
2-02-397758-4first digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: China, People's Republic
ISBNas­su­med er­rorCatalogs for checking
7-02-398758-41st and 6th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: former Czechoslovakia
ISBNas­su­med er­rorCatalogs for checking
80-03-97758-4third digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-239-6758-4sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-239-7358-4seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-239-7750-4ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-239-7758-Xtenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-239-7778-4eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-249-7758-34th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
80-279-7758-4fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-293-7758-44th and 5th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Poland
ISBNas­su­med er­rorCatalogs for checking
83-209-7758-42nd and 4th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Denmark
ISBNas­su­med er­rorCatalogs for checking
87-23-90758-42nd and 6th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Italy
ISBNas­su­med er­rorCatalogs for checking
88-239-7758-4second digit was chan­ged. amazon.co.uk amazon.com amazon.de

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