Galstyan, G.F. <br/><br/>
Basics of environment and ecology tests and tasks :  student book / 
G.F. Galstyan, H.G. Petrosyan ; National polytechnic university of Armenia. 
 - Yerevan :  Chartaraget,  2020. 
 - 56 pages :  ill.;  20 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9789939729404 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology--Handbook