ISBN 838879022 was input with 9 digits (one digit too few).

The ISBN 838879022 that you entered has got 9 digits, i.e. one digit is missing to make a valid ISBN. You can find information on the format of an ISBN on the home page of this site. This site has found the following 10 numerically correct ISBN out of which the ISBN that you input coule have resulted by a single error (dropping one digit). You can now check out these suggestions in the databases of the following booksellers' sites: (UK), (USA) and (Germany). Additional sites to search by ISBN (in this case, in catalogs of libraries) are e.g. the Library of Congress (USA) or the search gateway of the Deutsche Bibliothek. To the home page
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ISBN prefix group: French language
ISBNas­su­med er­rorCatalogs for checking
2-8388-7902-2first digit was drop­ped.
ISBN prefix group: Poland
ISBNas­su­med er­rorCatalogs for checking
83-88769-02-2sixth digit was drop­ped.
83-88790-22-6tenth digit was drop­ped.
83-88790-24-2ninth digit was drop­ped.
83-88790-72-2eighth digit was drop­ped.
83-88798-02-2seven­th digit was drop­ped.
83-88879-02-2third digit was drop­ped.
fourth digit was drop­ped.
83-88879-02-2fifth digit was drop­ped.
ISBN prefix group: Brazil
ISBNas­su­med er­rorCatalogs for checking
85-388-7902-2second digit was drop­ped.

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