?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=K+L&rft.au=Sahrawat%2C+K+L&rft.aulast=Sahrawat&rft.atitle=Control+of+urea+hydrolysis+and+nitrification+in+soil+by+chemicals+-+Prospects+and+problems+&rft.title=Plant+and+Soil&rft.issn=0032-079X&rft.date=1980&rft.volume=57&rft.pages=335-352&rft.issue=2-3&rft.genre=article