00334nam a2200133 a 450000500170000002000150001708200160003210000200004824500340006825000110010226000390011330000250015270000230017720251203110339.0  a0030287049  a515.35bABE  aAbell, Martha L  aModern differential equations  a2nd ed  aFort WorthbHarcourt Collegec2001  axvi,610p.c22cm.bHB  aBraselton, James P