Karapetian, K.M. <br/><br/>
English for students of natural sciences / 
Karo, M. Karapetian, Vatchick, G. Grigorian ; YSU. 
 - Yerevan :  Yerevan State University Press ,  1997. 
 - 221 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language Natural sciences <br/>Английский язык