ISBN 0198549405 hat failed the check­sum digit test.
The following 13 formally correct ISBNs were determined. Starting from these ISBNs the value 0198549405 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
0-09-854940-5second digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-11-854940-5third digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-19-254940-5fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-19-804945-55th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
0-19-850940-5sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-19-854440-5seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-19-854910-5eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-19-854940-7tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-19-854941-5ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
0-19-854950-48th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
0-19-894940-5fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: India
ISBNas­su­med er­rorCatalogs for checking
81-905494-0-51st and 4th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Sweden
ISBNas­su­med er­rorCatalogs for checking
91-985494-0-5first digit was chan­ged. amazon.co.uk amazon.com amazon.de

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