00330n   a2200133 a 4500000002100000001000700021005001700028082002100045100001700066245003900083250000800122260005800130300000800188B B                 01440820220201182533.0  a515.35bN9,1 MAT  aKapoor, N.M.  aElements of differential equations  aIst  aNew DelhibPitambar Publishing Company Pvt. Ltdc1999  a324