Millar, Susanna. The psychology of play / Susanna Millar. - Baltimore : Penguin Books, [1968]. - 288 p. ; 18 cm. - A Pelican Original A974 . - 155.41 . Bibliogr.: p. [257]-281. Subjects--Topical Terms: Play--Psychological aspectsChild psychology Dewey Class. No.: 155.41