por Angel, Allen R, 1942- [autor] | Angel, Allen R, 1942-. Intermediate algebra for college students | Runde, Dennis C [autor] | Casillas Rodríguez, Kenyi [traductor] | Bravo Benard, Susana [traductor].
por Sullivan, Michael, 1942- [autor] | Sullivan, Michael, 1942-. Algebra & trigonometry | Bravo Bénard, Susana [traductor].