Johnson, Robert L. Arithematics : a text for elementary school teachers / [by] Robert L. Johnson [and] Charles R. McNerney. - New York : Macmillan, 1974 - xiv, 476 p. illus. 24 cm. ISBN: 0023608803 Subjects--Topical Terms: Arithmetic--Study and teaching (Elementary)Arithmetic. Dewey Class. No.: 372.72044 / JOA 1974