por Levin, Richard I [autor] | Kirkpatrick, Charles A [autor] | Sanchez Palma, Jose Rosendo [traductor] | Levin, Richard I. Quantitative approaches to management.
por Duckworth, W. E [autor] | Gear, A. E [autor] | Lockett, A.g [autor] | Coria Soto, Mario Alberto [traductor] | Duckworth, W. E. Guide to operational research.