A source book of Gestalt psychology / 
Prepared by Willis D. Ellis. With an introd. by K. Koffka. 
 - New York ; London :  Humanities Press; Routledge & Kegan Paul Ltd.,  1938 [Impression 1955]. 
 - xiv, 403 p. :  illus. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Gestalt psychology.
<br/><br/><label>Dewey Class. No.: </label>150.198208  / SOU 1955