por Mendenhall, William [autor] | Beaver, Robert J [autor] | Beaver, Barbara M [autor] | Sánchez Fragoso, Francisco [traductor].
por Mendenhall, William [autor] | Beaver, Robert J [autor] | Beaver, Barbara M [autor] | Romo Muñoz, Jorge Humberto [traductor].
por Mendenhall, William [autor] | Reinmuth, James E, 1940- [autor] | Beaver, Robert J [autor].