Bhattacharya, Ratul Bindur pora sindhuloi-bishay an Assamese popular science book Ratul Bhattacharya - 1st - Guwahati Publication Board Assam 2008 - 106p. ill. 21cm Text in Assamese language ISBN: Rs.80 Subjects--Topical Terms: 1 Dewey Class. No.: / BHA