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Impacts of a violence prevention program for middle schools findings after 3 years of implementation

Washington, DC : National Center for Education Evaluation and Regional Assistance, Institute of Education Sciences, U.S. Dept. of Education, [2011] 2011

Impacts of a violence prevention program for middle schools findings from the first year of implemen

[Washington, D.C.] : U.S. Dept. of Education, Institute of Education Sciences, National Center for Education Evaluation and Regional Assistance, [2010] 2010