@article{8447,
      recid = {8447},
      author = {Chaffee, Maurice A.},
      title = {Geochemical exploration techniques based on distribution  of selected elements in rocks, soils, and plants, Vekol  porphyry copper deposit area, Pinal County, Arizona /},
      publisher = {U.S. Govt. Print. Off.,},
      address = {Washington :},
      pages = {v, 78 p. :},
      year = {1977},
      url = {http://library.usi.edu/record/8447},
}