Fleck, Cynthia F. Elementary algebra : guide for students in mastery-learning classes / Cynthia F. Fleck, John T. Holm, Edgar A. Rutter. - 4th ed. - New York : American Heritage Custom Pub., c1995. - xi, v. p. ; 28 cm. Includes index. ISBN: 0828106800 Subjects--Topical Terms: Algebra.