ISBN 0521077195 hat failed the check­sum digit test.
The following 13 formally correct ISBNs were determined. Starting from these ISBNs the value 0521077195 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: English language
ISBNas­su­med er­rorCatalogs for checking
0-12-107719-5second digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-251-07719-52nd and 3rd digits were swap­ped. amazon.co.uk amazon.com amazon.de
0-521-02719-5sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-521-07709-5eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-521-07712-5ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-521-07719-2tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-521-07759-18th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
0-521-07791-58th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
0-521-07919-5seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-521-57719-5fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-531-07719-5third digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-7210-5719-52nd and 6th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: German language
ISBNas­su­med er­rorCatalogs for checking
3-521-07719-5first digit was chan­ged. amazon.co.uk amazon.com amazon.de

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