00728 a2200253 4500 ITTG256 OSt 20251022143448.0 241215s1971 |||||||||||||||||| #d 84-03-19077-8 ITTG ITTG spa 658.4034 CH77 CHURCHMAN, C. WEST. INTRODUCCION A LA INVESTIGACION OPERATIVA/ C. WEST CHURCHMAN, RUSSELL L. ACKOFF, E. LEONARD ARNOFF. MADRID: AGUILAR 1971 XXIV, 638 P. 22 CM COLEC. ECONOMIA DE LA EMPRESA 1 1.INVESTIGACION OPERATIVA. ACKOFF, RUSSELL L. ARNOFF, E. LEONARD. ddc 1 20090813 14:22:51 245 245 3711 Germán Gutiérrez 0 0 ddc 0 0 1 1 GEN 2009-08-13 0 658.4034 CH77 13236 2025-01-15 07:15:40 ej.1 2025-01-15 1