well-formed | ||
valid hyphenation | ||
ISBN-10 | 88-88838-67-8 | 8888838678 |
ISBN-13 | 978-88-88838-67-0 | 9788888838670 |
Agency | Italy |
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: 0 |