Lewin, Kurt Principles of topological psychology / Kurt Lewin ; translated by Fritz Heider and Grace M. Heider - 1st ed. - New York : McGraw-Hill Book Company, inc, 1936 [Reprinted 1969]. - xv, 231 p. : ill. ; 24 cm. Include Bibliography and Index Subjects--Topical Terms: Gestalt psychology Dewey Class. No.: 150.1982 / LEP 1969