?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Nathalie&rft.aulast=Schieb-Bienfait&rft.au=Schieb-Bienfait%2C+Nathalie&rft.date=2004&rft.title=Fili%C3%A8re+biologique+et+logiques+d%E2%80%99action+%3A+%C3%A9l%C3%A9ments+d%E2%80%99analyse+des+difficult%C3%A9s+de+structuration+d%E2%80%99une+fili%C3%A8re+r%C3%A9gionale&rft.genre=proceeding