?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Richter%2C+Dr+Toralf&rft.aulast=Richter&rft.aufirst=Toralf&rft.date=2006&rft.title=The+need+for+a+European+harmonised+data+collection+on+private+organic+consumption+%C3%A2%C2%80%C2%93+methodological+and+economic+issues+-+&rft.genre=proceeding