Campbell, Donald T.  <br/><br/>
Experimental and quasi-experimental designs for research /  
Donald T. Campbell ; Julian C. Stanley.  
 - Boston :   Houghton Mifflin Company,   1963. 
 - ix, 84 pages ;   30 centimeter. 
<br/><br/> Includes index. 
<br/><br/>References: pages 71-76. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research --Methodology.
<br/><br/><label>Dewey Class. No.: </label>FOR 001.434 C15e 1963