?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Sarapatka%2C+Prof.+Dr.+Borivoj&rft.aulast=Sarapatka&rft.aufirst=Borivoj&rft.date=2006&rft.title=AN+EVALUATION+OF+SELECTED+SOIL+PROPERTIES+AND+THEIR+EFFECT+ON+THE+BIOLOGICAL+ACTIVITY+OF+SOILS+IN+ORGANIC+FARMING+IN+THE+CZECH+REPUBLIC&rft.genre=proceeding