Samudra bigyan 
Gautam Kumar Das 
 - 2nd 
 - Kolkata  Levant Books  2012 
 - 273p. 
<br/><br/><label>ISBN: </label>978-81-908064-6-6  Rs.325.00 
<br/><br/><label>Dewey Class. No.: </label>551.4  / D229