00462nam a2200181Ia 4500003000400000005001700004008004100021020001800062040000700080041000800087082002200095100002400117245006700141250000600208260003800214300001500252365001300267OSt20230426152953.0210423s2011    xx            000 0 und d  a9780070530713  cAL  aeng  a515.35 223bSIMJ  aSIMMONS (George F).  aDifferential equations with applications and historical notes.  a2  aNew DelhibTata McGraw-hillc2011  axx,629bPB  b440cINR