por Weiss, Marie Johanna, 1903 [autor] | Dubisch, Roy [autor] | Pérez Castellanos, José Hernán [traductor] | Cortés Barrios, Ramón | Weiss, Marie Johanna, 1903. Higher algebra for the undergraduate.
por Ross, Shepley L [autor] | Cortés Barrios, Ramón [colaborador] | Cortes Gutierrez, Patricia [traductor] | Ross, Shepley L. Introduction to ordinary differential equations.
por Cortés Barrios, Ramón [autor].