00553nam a2200169 a 450000500170000000800410001704100080005808200110006610000200007724500580009726400380015530000110019365000380020494200070024299900170024995201170026620260717090940.0260717s1965    ii            000 0 eng d  aeng04a515.351 aKells, Lyman M.10aElementary differrential equations /cKells, Lyman M. 1aBombay :bMcGraw-Hill co.,c1965.  a430 p. 4aElementary differential equations  cBK  c19562d19562  001040708DCaBKBCLbBKBCLd1978-07-22g62.00l0o515.35 KELp9285r2026-07-17 09:09:40v62.00w2026-07-17yBK