not well-formed | |||||||||
invalid hyphenation | |||||||||
This doesn't look like an ISBN | |||||||||
The check-digit is not correct. If the rest of the ISBN is correct (and it may not be), the check digit should be: |
well-formed | ||
valid hyphenation | ||
ISBN-10 | 964-5668-42-5 | 9645668425 |
ISBN-13 | 978-964-5668-42-4 | 9789645668424 |
Agency | Iran | |
Publisher | Behnam |
well-formed | ||
valid hyphenation | ||
ISBN-10 | 964-5668-45-X | 964566845X |
ISBN-13 | 978-964-5668-45-5 | 9789645668455 |
Agency | Iran | |
Publisher | Behnam |