000 00261nam a2200121 a 4500
003 EIA
001 5887
942 _02
_2ddc
_cBK
245 _aDifferential equations
260 _cc1960
008 141112s1960 ck r 000 u spa d
082 _a515.35
_bA35d
_c2ed
999 _c3294
_d3294