por Grauer, Robert T, 1945- [autor] | Franco G., Carlos A [traductor] | Crawford, Marshal A, 1943- [autor] | Grauer, Robert T, 1945-. Structured cobol.
por Boylestad, Robert L [autor] | Nashelsky, Louis [autor] | Franco G., Carlos A [traductor] | Boylestad, Robert L. Electronic devices and circuit theory.
por Moskowitz, Herbert [autor] | Franco G., Carlos A [traductor] | Wright, Gordon P [autor] | Valencia Otalvaro, Fernando [traductor] | Moskowitz, Herbert. Operations research techniques for management.