Opie, Frank w.j. <br/><br/>
The green years:  an environmental research manual for senior, primary and junior secondary  teacheers./ 
Frank W.J. Opie. 
 - Cape Town:  Maskew Miller Longman,  1997. 
 - xv, 175p.,  ill.; 
<br/><br/> includes bibliographical references. 
<br/><br/><label>ISBN: </label>0636024709 9780636024700 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environment. South Africa. 
<br/><br/><label>Dewey Class. No.: </label>372.357