?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Langer%2C+Vibeke&rft.aulast=Langer&rft.aufirst=Vibeke&rft.date=2005&rft.title=The+development+of+farm+size+on+danish+organic+farms+-+a+comment+on+the+conventionalisation+debate+&rft.genre=proceeding