?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Garc%C3%ADa+Olmedo%2C+Francisco&rft.aulast=Garc%C3%ADa+Olmedo&rft.aufirst=Francisco&rft.title=El+Pais&rft.atitle=La+agricultura+en+el+nuevo+milenio&rft.date=April+1998&rft.genre=article