000 00209 a2200097 4500
001 27582
100 _aWalker, R
245 _aPump selection
260 _a
_bA.A. science pub inc
_c1977
090 _c18369
_d18369
942 _aNUST-CAE
_cM
_c9301
999 _c262655
_d262655