Bhutan journal of research and development /  Volume 13. 

 - Thimphu :  Royal University of Bhutan,  2024. 
 - 148 p. :  ill, ;  26cm. 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>A7.14