RT Article T1 Is G.R.E.A.T. effective? Results from the National Evaluation of the Gang Resistance Education and Training (G.R.E.A.T.) Program A1 Esbensen, Finn-Aage 1951- A2 Osgood, D.W. A2 Taylor, Terrance J. A2 Peterson, Dana LA English PB Oxford University Press YR 2014 UL https://krimdok.uni-tuebingen.de/Record/1912598795