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by Schmukler, Beatriz; Martinez, Citlali Ayala; Gutierrez, Gabriela Sanchez
by Christian A. Schwartz
by Bucay, Jorge
by Covey, Stephen R.; Piatigorsky, Jorge
by Lafer, Celso
by Duverger, Christian
by Duncan, Kenneth (comp.)
by Gonzalez, Yolanda Maria Cazares
by De Llergo, Ana Teresa Lopez; de Galindo, Luz Maria Cruz
by Diffenderffer, William