Cohen, David Precalculus : a problems oriented approach [exercises] /por David Cohen y Ross Rueger - 4 ed. - New York : West Publishing, 1993 - v, 324 p. ilus. ISBN: 0314023003 LCCN: 99242 Subjects--Topical Terms: Cálculo.Matemáticas. Dewey Class. No.: 515.076 / C66