Journal of science and technology research 2019-2020, volume - 3, issue - 1, June 2021 

 - 1st edition 
 - Dhaka :  Ministry of Science and Technology,  2021 
 - 114 pages:  ill;  28 cm 
<br/><br/> includes reference 
<br/><br/><label>Dewey Class. No.: </label>050.506  / JOU