An International Standard Book Number is always assigned to a reprinting of a book.
 Jahrhunderts, "Bibliography of Books Printed in the German Speaking Countries of the Seventeenth Century")== Explanatory notes ==== References ==== External links ==ISO 2108:2017  International Standard Book Number (ISBN)International ISBN Agencycoordinates and supervises the worldwide use of the ISBN systemNumerical List of Group IdentifiersList of language/region prefixesFree conversion tool: ISBN-10 to ISBN-13 & ISBN-13 to ISBN-10 from the ISBN agency
The 10-digit ISBN format was developed by the ISO and was published in 1970 as international standard ISO 2108

