?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=J+S&rft.au=Kanwar%2C+J+S&rft.aulast=Kanwar&rft.date=1980&rft.title=Analysis+Of+Constraints+To+Increased+Productivity+Of+Dryland+Areas&rft.btitle=FAI+Seminar+1980+on+Fertilisers+in+India+in+the+Eighties+Part+II&rft.genre=proceeding