Mosher, Ralph L. Supervision: the reluctant profession [by] Ralph L. Mosher and David E. Purpel. With the assistance of Kiyo Morimoto. - Boston, Houghton Mifflin [1971, c1972] - xiii, 225 p. 22 cm. Bibliography: p. 207-215. ISBN: 039512509X LCCN: 72158636 Subjects--Topical Terms: School supervision. LC Class. No.: LB2806 / .M7 1972 Dewey Class. No.: 371.2