Karapetian, Karo M. <br/><br/>
English for students of natural sciences / 
by Karo M. Karapetian, Vatchick G. Grigorian. 
 - Yerevan, Armenia :  Yerevan State University Press,  1997. 
 - 221 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language.--Science