| well-formed | ||
| no hyphens provided | ||
| ISBN-10 | 964-5757-02-9 | 9645757029 |
| ISBN-13 | 978-964-5757-02-9 | 9789645757029 |
| Agency | Iran | |
| Publisher | Tandis | |
| not well-formed | |||||||||
| valid hyphenation | |||||||||
| The check-digit is not correct. If the rest of the ISBN is correct (and it may not be), the check digit should be: 6. | |||||||||
| Correcting check-digit gives: 978-600-5757-02-6 which appears to be valid. The governing agency is: Iran. | |||||||||