Ary, Donald; Jacobs, Lucy Cheser & Razavieh, Asghar <br/><br/>
Introduction to research in education   

 - 2nd. ed. 
 - New York    1979 
 - xii, 388 p. 
 -   .
<br/><br/><label>ISBN: </label>
<br/><br/><label>Dewey Class. No.: </label>370.78  / A796