Lewis, D. G. <br/><br/>
Experimental design in education 

 - London  ; University Of London Press  , 1968 
 - 192p. 
<br/><br/><label>ISBN: </label> 31.50 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education
<br/><br/><label>Dewey Class. No.: </label>370  / LEW