por Weisskopf, Gene [autor] | Cardenas, Agustin [traductor] | Weisskopf, Gene. Murphy's laws of pcs.
por Weisskopf, Gene [autor] | Weisskopf, Gene. Mastering Quattro Pro 2 | Tejera, Héctor G [traductor] | Weisskopf, Gene. Quattro pro 3 instant reference.