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ISBN check digit calculator - The Hahn Library
瀏覽：799
日期：2026-04-19
ISBN (International Standard Book Number) is a unique number assigned to each book. ISBN-10: • The number has 9 information digits and ends with 1 check digit. • Assuming the digits are "abcdefghi-j" where j is the check digit. Then the check digit is ......看更多
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