Environmental education :  a sourcebook / 
edited by Cornelius J. Troost & Harold Altman 
 - New York :  Wiley,  1972 
 - xvi, 575 p.:  ill.;  26 cm. 
<br/><br/>Bibliography: p. 527-538 
<br/><br/><label>ISBN: </label>0471891002 
<br/><br/><label>LCCN: </label>72-002321 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental education