000 00309nam a2200145Ia 4500
100 _aRiggs/J.L/ Bedworth/ D.D.
250 _a4
942 _cBK
654 _aeconomics
245 _aEngineering Economics
260 _bTata Mc Graw hill
_c1996
082 _a658.15
_bRIG
546 _aENGLISH
999 _c27525
_d27525