@article{229423,
      author = {Wrucke, Chester T.,},
      url = {http://library.usi.edu/record/229423},
      title = {The Whitehorn granodiorite of the Arkansas Valley in  central Colorado,},
      publisher = {U.S. Govt. Print. Off.,},
      recid = {229423},
      pages = {iii, 8 p. :},
      address = {Washington,},
      year = {1974},
}