Laptev, I. <br/><br/>
The planet of reason: a sociological suty of man-nature relationship 

 - Moscow  Progress Publishers  1977 
 - 220p.  21cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Human ecology
<br/><br/><label>LC Class. No.: </label>EAF FOS GF50.L3613