Dryutiman Bhattacharyya <br/><br/>
Adhunik bhu-jalbidya o samudrabidya (Honours pratham patra) / 
Dryutiman Bhattacharyya ; Maitrayee Chakrabarti 
 -  Naboday Publication 
<br/><br/><label>Dewey Class. No.: </label>551.6