ISBN 9787051171 hat failed the check­sum digit test.
The following 16 formally correct ISBNs were determined. Starting from these ISBNs the value 9787051171 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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Tiu ĉi paĝo en Esperanto (Unikodo)
Tiu cxi pagxo en Esperanto (x-igata)
ISBN prefix group: German language
ISBNas­su­med er­rorCatalogs for checking
3-7870-5117-1first digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: China, People's Republic
ISBNas­su­med er­rorCatalogs for checking
7-7870-5119-11st and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Netherlands
ISBNas­su­med er­rorCatalogs for checking
94-8705-117-1second digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Mexico
ISBNas­su­med er­rorCatalogs for checking
970-785-117-13rd and 5th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Philippines
ISBNas­su­med er­rorCatalogs for checking
971-705-117-83rd and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Caribbean Community
ISBNas­su­med er­rorCatalogs for checking
976-705-117-1third digit was chan­ged. amazon.co.uk amazon.com amazon.de
 
ISBN prefix group: Nigeria
ISBNas­su­med er­rorCatalogs for checking
978-005-117-1fourth digit was chan­ged. amazon.co.uk amazon.com amazon.de
978-70111-7-56th and 10th digits were swap­ped. amazon.co.uk amazon.com amazon.de
978-70411-7-1sixth digit was chan­ged. amazon.co.uk amazon.com amazon.de
978-70511-7-7tenth digit was chan­ged. amazon.co.uk amazon.com amazon.de
978-70513-7-1eighth digit was chan­ged. amazon.co.uk amazon.com amazon.de
978-70517-1-18th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
978-70581-7-1seven­th digit was chan­ged. amazon.co.uk amazon.com amazon.de
978-70711-5-16th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de
978-71511-7-1fifth digit was chan­ged. amazon.co.uk amazon.com amazon.de
978-77511-0-15th and 9th digits were swap­ped. amazon.co.uk amazon.com amazon.de

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