2 1 50 Engineering Economy Tent Edition Jilid 2 DEGARMO, E. Paul Additional Author SULLIVAN, WILLIAM G Additional Author BONTADELLI, James a. Primary Author WICKS, Elin m Primary Author mixed material 9798901940 Jakarta PT prenhallindo 1997 Engineering Economy Tent Edition Jilid 1 DEGARMO, E. Paul Primary Author SULLIVAN, WILLIAM G Primary Author BONTADELLI, James a. Primary Author WICKS, Elin m Primary Author mixed material 9798901959 Jakarta Prenhallindo 1997