Liebert Robert M Early window effects of elivision on children and Liebert Robert M - New York Pergamon USA 1973 - xvi, 193p. cm. - Pergamon general psychology series . Bib chapterwise; Appendix p. 172-85 ISBN: 0080170919 Source: General Book Subjects--Topical Terms: Education Dewey Class. No.: T:1(D65,45), L3