Entwisle , N. J.   . <br/><br/>
Educational Research in Action /   Textual Documents 

 - London  :   University of London Press Ltd. ,   1972. 
 - 346 ;    
<br/><br/><label>ISBN: </label>  
<br/><br/><label>Subjects--Index Terms: </label>Preventive and Social Medicine  Medical Science 
<br/><br/><label>Dewey Class. No.: </label>614  / ENT