Teaching modern mathematics in the elementary school /
Fehr, Howard F. 1901-
Teaching modern mathematics in the elementary school / by Howard F. Fehr and Jo McKeeby Phillips - 2nd ed. - Reading, Mass. : Addison-Wesley, 1972 - xviii, 515 p. : ill. ; 24 cm.
Bibliography: p. 503-505
020102005x
Mathematics--Study and teaching (Elementary)
Teaching modern mathematics in the elementary school / by Howard F. Fehr and Jo McKeeby Phillips - 2nd ed. - Reading, Mass. : Addison-Wesley, 1972 - xviii, 515 p. : ill. ; 24 cm.
Bibliography: p. 503-505
020102005x
Mathematics--Study and teaching (Elementary)
