Lange, Walter Henry Consumer mathematics / authors, Walter H. Lange, Robert D. Mason, Temoleon G. Rousos ; project editor, Fran Seidenberg. - [Markham, Ont.]: Houghton Mifflin Canada, c1985. - xiv, 434 p. : ill. ; 24 cm. Includes bibliographical references (p. 428-430). Subjects--Topical Terms: MathematicsFinance, PersonalConsumer education Dewey Class. No.: 372.7