Martinez, Andres <br/><br/>
Strategies for improving precision in group-randomized experiments  pp. 5-29 
Stephen Raudenbush, Andres Martinez and Jessaca Spybrook 
<br/><br/> Education evaluation and policy analysis Vol. 29 No. 1 Mr 2007 
<br/><br/>A Quarterly publication of the American Educational Research Association 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>GROUP-RANDOMIZED EXPERIMENTS<br/>MULTILEVEL RESEARCH DESIGN<br/>CLASSROOM INTERVENTION<br/>INTERVENTION
<br/><br/><label>LC Class. No.: </label>JNF LB 1028 E35 2007