ISBN 393604952X hat failed the check­sum digit test.
The following 14 formally correct ISBNs were determined. Starting from these ISBNs the value 393604952X 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
1-936049-52-Xfirst digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: German language
ISBNas­su­med er­rorCatalogs for checking
3-436-09952-X2nd and 6th digits were swap­ped. amazon.co.uk amazon.com amazon.de
3-8360-4952-Xsecond digit was chan­ged. amazon.co.uk amazon.com amazon.de
3-930049-52-Xfourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
3-932049-56-X4th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
3-936009-52-Xsixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
3-936044-52-Xseven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
3-936049-22-Xeighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
3-936049-52-1tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
3-936049-53-Xninth digit was chan­ged. amazon.co.uk amazon.com amazon.de
3-936059-42-X6th and 8th digits were swap­ped. amazon.co.uk amazon.com amazon.de
3-936449-52-Xfifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
3-96604-952-Xthird digit was chan­ged. amazon.co.uk amazon.com amazon.de
3-99604-352-X3rd and 7th digits were swap­ped. amazon.co.uk amazon.com amazon.de

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