Carman, Robert A. Basic mathematical skills : a guided approach / Robert A. Carman, Marilyn J. Carman. - 2nd ed. - New York : Joh Wiley & sons, Inc., c1981. - xii, 576 p. : ill. ; 28 cm. Includes index. ISBN: 0471036080 Subjects--Topical Terms: Arithmetic.Arithmetic--Programmed instruction. Dewey Class. No.: 513.077 / CAB 1981