well-formed | ||
valid hyphenation | ||
ISBN-10 | 9939-68-464-9 | 9939684649 |
ISBN-13 | 978-9939-68-464-2 | 9789939684642 |
Agency | Armenia | |
Publisher | Zangak |
well-formed | ||
no hyphens provided | ||
ISBN-10 | 9939-99-015-4 | 9939990154 |
ISBN-13 | 978-9939-99-015-6 | 9789939990156 |
Agency | Armenia | |
Publisher | Zangak |