Silbereisen Rainer K. Ed. Approaches to positive youth development - Los Angeles Sage Publications USA 2007 - xii, 352p. cm. ISBN: 9781412922883 (hbk) 4887 Standard No.: 236,477 Source: 220, 23/10/2008, Bharatiya Sahitya Bhavana Textual Subjects--Topical Terms: SOCIOLOGY Dewey Class. No.: Y12:7:7, P7