00262nam a2200109Ia 4500008004100000041001200041082001100053100001700064245005900081260000600140650000600146221030s9999    xx            000 0 und d  aEnglish  a105.23  aP. K. Mittal 2aA text Book of Differential Equationscby P. K. Mittal  c0  aB