?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Munkholm%2C+L.J.&rft.aulast=Munkholm&rft.aufirst=L.J.&rft.date=1998&rft.title=Non-inverting+soil+tillage+as+a+means+of+optimising+soil+tilth&rft.genre=proceeding