Lazo, Adriana Trigonometria Preuniversitaria / Adriana Lazo, Ma. Esther Hernandez, Juan Manuel Silva - Mexico : Limusa editorial , 2010 - 576 p. ; 24 cm. ISBN: 978-607-05-0174-6 Subjects--Topical Terms: Trigonometria Dewey Class. No.: 514 LAZ