?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=J.+J.&rft.au=Drevon%2C+J.+J.&rft.aulast=Drevon&rft.atitle=Nodular+diagnosis+for+ecological+engineering+of+the+symbiotic+nitrogen+fixation+with+legumes&rft.title=Procedia+Environmental+Sciences&rft.issn=1878-0296&rft.date=2011&rft.volume=9&rft.pages=40-46&rft.genre=article