Cohen, Louis and Manion, Lawrence <br/><br/>
Research methods in education 

 - 4th ed. 
 - London  Routledge  1980 
 - xxii,414p. 
<br/><br/><label>ISBN: </label>0415102359  £14.99 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education<br/>Educational Research
<br/><br/><label>Dewey Class. No.: </label>370.1  / COH