?url_ver=Z39.88-2004&rft_id=10.1017%2FS0376892900003350&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Biswas%2C+A.&rft.aulast=Biswas&rft.aufirst=A.&rft.issue=04&rft.volume=6&rft.date=1979&rft.issn=0376-8929&rft.atitle=Management+of+Traditional+Resource+Systems+in+Marginal+Areas&rft.title=Environmental+Conservation&rft.pages=257-264&rft.genre=article