Hubbard, Elaine. Elementary algebra a graphing approach / [Book] : Elaine Hubbard, Ronald D. Robinson. - Lexington, Mass. : D.C. Heath, c1996. - xvi, 653, 48 p. : ill. (some col.) ; 27 cm. Includes indexes. All. ISBN: 0669354996 Subjects--Topical Terms: Algebra. Dewey Class. No.: 512