Vasilyev, N. B. <br/><br/>
Straight lines and curves 

 - Moscow  Mir Publishers  1980 
 - 196p. 
<br/><br/><label>ISBN: </label> RS 6.00 
<br/><br/><label>Source: </label> RS 6.00 
<br/><br/><label>Dewey Class. No.: </label>516 VAS