por Karari, S. F [autor] | Oswald, James Willian [autor] | Perez Castellanos, Jose Hernan [traductor] | Karari, S. F. Machine shop training.
por Krar, Stephen F [autor] | St. Amand, J. E [autor] | Noriega, Francisco G [traductor] | Oswald, James Willian [autor] | Krar, Stephen F. Machine tool operations.