ISBN 69810546X was input with 9 digits (one digit too few).

The ISBN 69810546X 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 9 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: English language
ISBNas­su­med er­rorCatalogs for checking
0-698-10546-Xfirst digit was drop­ped.
ISBN prefix group: [no known group prefix]
ISBNas­su­med er­rorCatalogs for checking
639810546Xsecond digit was drop­ped.
695810546Xthird digit was drop­ped.
698104546Xsixth digit was drop­ped.
698105146Xseven­th digit was drop­ped.
698105406Xeighth digit was drop­ped.
698105468Xninth digit was drop­ped.
698170546Xfifth digit was drop­ped.
698310546Xfourth digit was drop­ped.

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