well-formed | ||
valid hyphenation | ||
ISBN-10 | 954-446-557-X | 954446557X |
ISBN-13 | 978-954-446-557-5 | 9789544465575 |
Agency | Bulgaria |
well-formed | ||
valid hyphenation | ||
ISBN-10 | 973-583-301-8 | 9735833018 |
ISBN-13 | 978-973-583-301-5 | 9789735833015 |
Agency | Romania |