?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Brock%2C+Christopher&rft.aulast=Brock&rft.aufirst=Christopher&rft.date=2008&rft.title=The+Impact+of+Site+and+Management+Factors+on+Humus+Dynamics+in+Long-term+Field+Experiments+&rft.genre=proceeding