Stepanova <br/><br/>
Частотный словарь общенаучной лексики:Chastotnyy slovarʹ obshchenauchnoy leksiki/Frequency Dictionary of General Scientific Vocabulary 

 - Moscow  1970 
 - 87p. 
<br/><br/><label>Dewey Class. No.: </label>491.731 STE/C