Edwards, Allen Louis. <br/><br/>
Experimental design in psychological research  /    
Allen L. Edwards . 
 - New York :   Rinehart,   1950. 
 - xiv, 446 p. :    illus. ;    22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Psychology --Research.------
<br/><br/><label>Dewey Class. No.: </label>150.724