?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=S+P&rft.au=Wani%2C+S+P&rft.aulast=Wani&rft.atitle=Factors+affecting+nitrogenase+activity+(C2H2+reduction)+associated+with+sorghum+and+millet+estimated+using+the+soil+core+assay+&rft.title=Canadian+Journal+of+Microbiology&rft.issn=1480-3275&rft.date=1983&rft.volume=29&rft.pages=1063-1069&rft.issue=8&rft.genre=article