ISBN 0821845519 books & textbook
Qualitative Theory of Differential Equations (Translations of Mathematical Monographs)
Tong-Ren Shi-Fen, Zhang Chang, Chih-Fen Ding
Amer Mathematical Society /1992T Hardcover / 461 Pages
isbn-10: 0821845519 / isbn-13: 9780821845516
