000 00208 a2200097 4500
001 10356
100 _aElen, L W F
245 _aDifferential equations Pt 1
260 _a
_bMacmillan
_c
090 _c8009
_d8009
942 _aNUST-CAE
_cM
_c34722
999 _c245429
_d245429