Garry, Ralph. The nature and conditions of learning / [By] Ralph Garry [and] Howard L. Kingsley. - 3rd ed. - Englewood Cliffs, N.J. : Prentice-Hall, [1970]. - x, 593 p. : ill. ; 24 cm. - 370.15 . Previous editions by Howard L. Kingsley. Bibliogr.: p. 533-580. ISBN: 0136106838 Subjects--Topical Terms: Learning, Psychology of. Dewey Class. No.: 370.15