?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=R+M&rft.au=Polhill%2C+R+M&rft.aulast=Polhill&rft.isbn=0003830373&rft.date=October+1985&rft.title=Taxonomy+of+grain+legumes&rft.tpages=859&rft.btitle=Grain+legume+crops&rft.genre=bookitem