?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Botin+Gonzalez%2C+Jose+Antonio&rft.aulast=Botin+Gonzalez&rft.aufirst=Jose+Antonio&rft.title=Sustainable+management%3A+a+strategic+challenge+for+a+global+minerals+and+metals+industry&rft.btitle=Proceedings+of+the+Copper+2010&rft.date=2010&rft.genre=proceeding