Study and control of anthropogenic transformation of natural ecosystems / 
International Geographic Union. 
 - Moscow, URSS :  Symposium of the IGU Commission on Evironmental Problems,  1980. 
 - 328 p. ;  il., tablas, mapas;  21 cm. 
<br/><br/><br/>Ingles 
<br/><br/><label>ISBN: </label> Normal 
<br/><br/><label>Dewey Class. No.: </label>333.7