Trochim, William M. K. <br/><br/>
Research design for program evaluation :  the regression-discontinuity approach / 
William M.K. Trochim ; foreword by Donald T. Campbell. 
 - Beverly Hills :  Sage Publications,  c1984. 
 - 272 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0803920377 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Methodology.<br/>Regression analysis.<br/>Evaluation research (Social action programs)
<br/><br/><label>Dewey Class. No.: </label>300.1  / TRO N84R