ISBN 8756721079 hat failed the check­sum digit test.
The following 12 formally correct ISBNs were determined. Starting from these ISBNs the value 8756721079 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: Japan
ISBNas­su­med er­rorCatalogs for checking
4-7567-2107-9first digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Brazil
ISBNas­su­med er­rorCatalogs for checking
85-5672-107-9second digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Denmark
ISBNas­su­med er­rorCatalogs for checking
87-06-72107-9third digit was chan­ged. amazon.co.uk amazon.com amazon.de
87-557-2107-9fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
87-564-2107-9fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
87-567-2107-2tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
87-567-2109-9ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
87-567-2157-9eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
87-567-2207-9seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
87-567-5107-9sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
87-567-7102-96th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
87-7652-107-93rd and 5th digits were swap­ped. amazon.co.uk amazon.com amazon.de

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