000			00317nam a2200133Ia 4500
008			231217s9999 xx 000 0 und d
041			_aEnglish
082			_a658 NAR;3
100			_aNarasimha Swamy N
245		0	_aEngineering economics and management
260			_c1990 _bDayaram
300			_a552
942			_cAA
999			_c162065 _d162065