00275nam a2200109Ia 4500008004100000082001500041100001500056245003900071250001100110260003600121300000800157190710s9999    xx            000 0 und d  a517.38 SI6  aSinha, H C 0aText book of differential quations  a3rd ed  aAgrabRam Prasad and Sonsc1983  a144