?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Halpin%2C+Darren&rft.aulast=Halpin&rft.aufirst=Darren&rft.date=2008&rft.title=Interest+Groups+and+the+Governance+of+Growth+in+Organic+Farming&rft.genre=proceeding