000 00220 a2200097 4500
001 18889
100 _aWeatherburu, C E
245 _aDifferential of three
260 _a
_bMacmillan & Co
_c
090 _c13978
_d13978
942 _aNUST-CAE
_cM
_c4422
999 _c253962
_d253962