well-formed | ||
valid hyphenation | ||
ISBN-10 | 977-14-2697-4 | 9771426974 |
ISBN-13 | 978-977-14-2697-4 | 9789771426974 |
Agency | Egypt |
well-formed | ||
valid hyphenation | ||
ISBN-10 | 1-78110-760-2 | 1781107602 |
ISBN-13 | 978-1-78110-760-7 | 9781781107607 |
Agency | English language |