ISBN 0091912550 hat failed the check­sum digit test.
The following 16 formally correct ISBNs were determined. Starting from these ISBNs the value 0091912550 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
0-00-191255-0third digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-02-191955-03rd and 7th digits were swap­ped. amazon.co.uk amazon.com amazon.de
0-09-091255-14th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
0-09-181255-0fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-09-191055-27th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
0-09-191235-0eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-09-191252-0ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-09-191255-5tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-09-191655-0seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-09-192255-0sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-09-591215-04th and 8th digits were swap­ped. amazon.co.uk amazon.com amazon.de
0-09-891255-0fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-391-91255-0second digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-9910125-5-02nd and 5th digits were swap­ped. amazon.co.uk amazon.com amazon.de
1-0919-0255-01st and 6th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Lithuania
ISBNas­su­med er­rorCatalogs for checking
609-19-1255-0first digit was chan­ged. amazon.co.uk amazon.com amazon.de

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