000 00253nam a22001217a 4500
020 _a978070486775
082 _a658.15
100 _aRIGGS JAMES C.
245 _aENGINEERING ECONOMICS
250 _a4TH
260 _aCHENNAI
_bMGH
_c1996
942 _cBK
999 _c8705
_d8705