ISBN 8086646116 hat failed the check­sum digit test.
The following 12 formally correct ISBNs were determined. Starting from these ISBNs the value 8086646116 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: former Czechoslovakia
ISBNas­su­med er­rorCatalogs for checking
80-16-64681-63rd and 8th digits were swap­ped. amazon.co.uk amazon.com amazon.de
80-566-4611-6third digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-686-4611-63rd and 4th digits were swap­ped. amazon.co.uk amazon.com amazon.de
80-8164-611-6fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-86246-11-6fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-86466-11-65th and 6th digits were swap­ped. amazon.co.uk amazon.com amazon.de
80-86640-11-6seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-86646-10-6ninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-86646-11-4tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-86646-41-6eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
80-86686-11-6sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: India
ISBNas­su­med er­rorCatalogs for checking
81-86646-11-6second digit was chan­ged. amazon.co.uk amazon.com amazon.de

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