Silbereisen Rainer K. Ed. Approaches to positive youth development - Los Angeles Sage USA 2007 - xii,352p. cm. ISBN: 978141922883 (hbk) 4719.60 Standard No.: 90041 Source: 311, 22/02/2008, Bhartiya Sahitya Bhawan Textual Subjects--Topical Terms: PSYCHOLOGY Dewey Class. No.: S2:7:7, P7