000 00494 a2200253 4500
001 1007482
020 _a6
041 _aeng
080 _a517.9 Kel(3)
245 _aElementary differential equations
250 _a6th intl.
260 _aNew York
260 _bMcGraw-Hill,
260 _c1965
300 _axii,430 p.
300 _c21 cm
490 _a
100 _aKells, Lyman M.
700 _a
650 _a
650 _aDifferential equations
942 _cBK
942 _2UDC
999 _c36825
_d36825