00319nam a2200133Ia 4500003000400000005001700004008004100021082001800062100001600080245002700096250000900123260004300132300001000175TMU20260702153202.0160921s9999    xx            000 0 und d  a515.35bGUP-D  aGupta, R.K.  aDifferantial Equations  a44th  bKrishna Prakashan Media c2009aMeerut  a580p.