Watts, D. G.  (David George). <br/><br/>
Environmental studies / 
D. G. Watts. 
 - London :  Routledge & Kegan Paul,  1969. 
 - x, 118 p. ;  20 cm. 
<br/><br/>Bibliography : p. 112-118. 
<br/><br/><label>ISBN: </label>2710065167 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education--Philosophy.