00703nam0 22002531i 450 99000733422040332120021010000733422FED01000733422(Aleph)000733422FED0100073342220021010d--------km-y0itay50------baita<<A >>theory of efficient cooperation and competitionTelsers.l.Cambridge1987Telser,Lester G.102733ITUNINARICAUNIMARCBK990007334220403321XV H1 178XV H1 178DTETheory of efficient cooperation and competition513660UNINAGEN01