00350nam a2200097Ia 4500008004100000082001800041100002100059245003800080260004500118650008900163211119s9999||||xx |||||||||||||| ||und||  a515.35bBOY-E  aBoyce, William E 0aElementary Differential Equations  bJohn Wiley and Sons, IncaNew Yorkc1956  aNatural SciencesvMathematicsMathematical AnalysisCalculusMathematicsxGeneral Stack