Blank, Leland T. Ingenieria Económica / Leland Blank - 2 - Colombia : McGraw-Hil - 558p. / 23 cm. ISBN: 968-451-880-3 Subjects--Topical Terms: 1. ECONOMIA \ 2. ADMINISTRACION LC Class. No.: TA177.4 B5318 Dewey Class. No.: 658.403.3 B216i