Potkov, Lev <br/><br/>
A world we do not see / 
Lev Potkov ; translated from Russian by X. Danko and edited by W. Perelman 
 - Moscow :  Foreign Languages Pub.,  1957 
 - 219 p. :  ill. ;  cm. 
<br/><br/> Text in English and Russian 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microorganisms<br/>Microbiology
<br/><br/><label>Dewey Class. No.: </label>576