000 00253 a2200097 4500
001 43067
100 _aPiaggio, H.T.H
245 _aAn elementary treatise on differential equations their applications
260 _aLondo
_bBell
_c
090 _c26925
_d26925
942 _aNUST-CAE
_cM
_c18808
999 _c278140
_d278140