Educational research in classrooms and schools :  a manual of materials and methods / 
[compiled by] Louis Cohen. 
 - London ;  New York :  Harper & Row,  1976. 
 - xvi, 426 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0063180472 
<br/><br/><label>LCCN: </label>76027714  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Research.
<br/><br/><label>LC Class. No.: </label>LB1028  / .E315 
<br/><br/><label>Dewey Class. No.: </label>370/.78