00329nam a2200133Ia 4500008004100000040001600041041001200057082001600069100002400085245002700109250001200136260003200148300001500180230917s9999||||xx |||||||||||||| ||und||  e13068aMAIN  aEnglish  a515.35 A63D  aAgnew, Ralph Palmer 0aDifferential equations  a2nd ed.  aNew YorkbMcGraw-Hillc1960  aix, 485 p.