not well-formed | |||||||||
ignored hyphens | |||||||||
The UCC prefix is malformed (should be 978 or 979). | |||||||||
The check-digit is correct. |
well-formed | ||
valid hyphenation | ||
ISBN-10 | 608-289-755-2 | 6082897552 |
ISBN-13 | 978-608-289-755-4 | 9786082897554 |
Agency | North Macedonia | |
Publisher | Ars Libris |