@article{199843,
      note = {Cover title.},
      author = {Wenrich, Karen J.},
      url = {http://library.usi.edu/record/199843},
      title = {Breccia pipes in the Red Butte area of Kaibab National  Forest, Arizona [microform] /},
      publisher = {U.S. Geological Survey :},
      recid = {199843},
      pages = {13 leaves :},
      address = {Denver, CO :},
      year = {1992},
}