Cohen, Louis, 1928- <br/><br/>
Educational research in classrooms and schools : a manual of materials and methods / 
Cohen, Louis, 1928- 
 - xvi, 426 p. : ill. ; 25 cm. 
<br/><br/><label>ISBN: </label>0063180472 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education -- Research<br/>Éducation -- Recherche<br/>Einführung.
<br/><br/><label>Dewey Class. No.: </label>370.78