Coppen, Helen Elizabeth. <br/><br/>
Aids to teaching and learning, 
by Helen Coppen. 
 - [1st ed.] 
 - Oxford,  New York,  Pergamon Press  [1969] 
 - x, 230 p.  illus.  20 cm. 
 - The Commonwealth and International Library. Education and Educational Research Division .
<br/><br/>Bibliography: p. 225-230. 
<br/><br/><label>ISBN: </label>0080129048 9780080129044 
<br/><br/><label>LCCN: </label>68009151  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teaching--Aids and devices.
<br/><br/><label>LC Class. No.: </label>LB1043  / .C656 1969 
<br/><br/><label>Dewey Class. No.: </label>371.3/078