ISBN 9989180374 hat failed the check­sum digit test.
The following 15 formally correct ISBNs were determined. Starting from these ISBNs the value 9989180374 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: [no known group prefix]
ISBNas­su­med er­rorCatalogs for checking
6989180374first digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: International NGO Publishers and EU Organizations
ISBNas­su­med er­rorCatalogs for checking
92-891-8037-4second digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Iceland
ISBNas­su­med er­rorCatalogs for checking
9979-1-8037-4third digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Papua New Guinea
ISBNas­su­med er­rorCatalogs for checking
9980-1-8037-4fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Morocco
ISBNas­su­med er­rorCatalogs for checking
9981-9803-7-44th and 5th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Latvia
ISBNas­su­med er­rorCatalogs for checking
9984-18-037-94th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: North Macedonia
ISBNas­su­med er­rorCatalogs for checking
9989-108-37-46th and 7th digits were swap­ped. amazon.co.uk amazon.com amazon.de
9989-120-37-4sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
9989-180-33-4ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
9989-180-37-7tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
9989-180-47-4eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
9989-183-07-47th and 8th digits were swap­ped. amazon.co.uk amazon.com amazon.de
9989-187-30-47th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
9989-189-37-4seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
9989-780-37-4fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de

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