00726nam0-22002771i-450-9900039200204033210-87154-091-6000392002FED01000392002(Aleph)000392002FED0100039200220020722d1987----km-y0itay50------baengGBEffective social scienceBernard Barber1987New YorkRussel sage fondation1987205 p23 cmBarber,Bernard44626ITUNINARICAUNIMARCBK990003920020403321A02.1842640DECTSDECTSEffective social science515832UNINA