Ryabchikov, A.  <br/><br/>
The Changing Face of the Earth 

 - Moscow :  Progress,   1975. 
 - 205p.;  22cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mahinda Ranaweera Collection<br/>Economics of land and energy
<br/><br/><label>Dewey Class. No.: </label>333.7  / RYA