Collier macmillian publishers <br/><br/>
Great soviet encyclopedia; v.13   

 - London  CMP  1976 
 - xxii, 618p. 
<br/><br/><label>LCCN: </label>73-10680 
<br/><br/><label>Dewey Class. No.: </label>037.1  / N73.13 "R"