USSR Science /  Textual Documents 
No Author. 
 - 1st ed. / 
 - Sl :  Sn ,  Nd. 
 - 114p. ;  16 cm.. 
<br/><br/><label>Subjects--Index Terms: </label>T/G-English 
<br/><br/><label>Dewey Class. No.: </label>823  / USS