?url_ver=Z39.88-2004&rft_id=0056&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=H.F.&rft.aulast=Mayland&rft.au=Mayland%2C+H.F.&rft.issue=1&rft.volume=30&rft.atitle=Fixation+of+Isotopic+Nitrogen+on+a+Semiarid+Soil+by+Algal+Crust+Organisms&rft.date=1966&rft.title=Soil+Science+Society+of+America+Proceedings&rft.pages=56-60&rft.genre=article