?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Postma%2C+Joeke&rft.aulast=Postma&rft.aufirst=Joeke&rft.date=2007&rft.title=Soil+suppressiveness+and+functional+diversity+of+the+soil+microflora+in+organic+farming+systems&rft.genre=proceeding