ISBN 943911670X hat failed the check­sum digit test.
The following 13 formally correct ISBNs were determined. Starting from these ISBNs the value 943911670X 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: French language
ISBNas­su­med er­rorCatalogs for checking
2-439-11670-Xfirst digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Netherlands
ISBNas­su­med er­rorCatalogs for checking
94-193-1670-X3rd and 5th digits were swap­ped. amazon.co.uk amazon.com amazon.de
94-390-1671-X5th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
94-391-1570-Xseven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
94-391-1620-Xeighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
94-391-1670-6tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
94-391-1679-Xninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
94-391-9670-Xsixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
94-394-1670-Xfifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
94-397-1610-X5th and 8th digits were swap­ped. amazon.co.uk amazon.com amazon.de
94-8911-670-Xthird digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Hungary
ISBNas­su­med er­rorCatalogs for checking
963-9116-70-Xsecond digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Romania
ISBNas­su­med er­rorCatalogs for checking
973-9116-40-X2nd and 8th digits were swap­ped. amazon.co.uk amazon.com amazon.de

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