Ursul, A. D. <br/><br/>
Philosophy and ecological problems of civilization 
A. D. Ursul 
 - Moscow :  Progress Publishers,  1983. 
 - 410p. :  21cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology<br/>Environmental ethics<br/>Environmental policy
<br/><br/><label>LC Class. No.: </label>GF49.P47