"riggs, james l. "
essentials of engineering economics: / james.l. riggs - ed. - toronto : mcgraw-hill ryerson 1983. - "xv, 574p.; 24 cm."
0-07-54858-x hard cover
engineering economy--managerial economics
620. 006 81 rig
essentials of engineering economics: / james.l. riggs - ed. - toronto : mcgraw-hill ryerson 1983. - "xv, 574p.; 24 cm."
0-07-54858-x hard cover
engineering economy--managerial economics
620. 006 81 rig