00329nam a2200133Ia 4500008004100000035001000041082002300051100001700074245003500091250000900126260002500135300000800160650002700168210723s9999||||xx |||||||||||||| ||und||  a53513  a515.352BORD / SPA  aSpain, Barry 0aOrdinary Diffrential Equations  a1 st  aLondonbVan Nostrand  a142  aDifferencial Equations