We documents everything related to Koch Rajbanshi. An archive has been created from its collection since 2012 in the centre. The Documentation is a permanent programme of the centre. At present the centre has may rare books, pamphlets, memorandums and photographs. We are in the process of digitizing the documents.
Centre for Koch (Rajbanshi) Studies and Development 
http://isca.co.in/SOC_HU_SCI/social-book.php
Please see the web:
QUERYING RELEVANCE OF THE TERM ‘INDIGENOUS PEOPLES’ IN A THREE-LEVEL-APPROACH WITH SPECIAL REFERENCE TO RAJBANSHI COMMUNITY OF NORTH BENGAL, WEST
Dr. Ashok Das Gupta, e-Book, pp 1 – 161, (2013), ISBN: 978-93-83520-08-4
Highlights:-
This is to query relevance of the term ‘Indigenous Peoples’ developed by International Labour Organization for benefit of indigenous communities. As there is no universal scale for indigenousness, three criteria such as attachment to the Land, application of Indigenous Knowledge System and response to Globalization might be helpful. This could further put some light on ecology versus politico-economic rank-path involving mode of production as the base of entire social-cultural system.