?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Nachimuthu%2C+Gunasekhar&rft.aulast=Nachimuthu&rft.aufirst=Gunasekhar&rft.date=2007&rft.title=Soil+phosphorus+status+in+organic+and+conventional+vegetable+farms+in+Southeast+Queensland%2C+Australia&rft.genre=proceeding