@article{226419,
      author = {Armstrong, Augustus K.},
      url = {http://library.usi.edu/record/226419},
      title = {Pennsylvanian carbonates, paleoecology, and rugose  colonial corals, north flank, eastern Brooks Range, Arctic  Alaska,},
      publisher = {U.S. Govt. Print. Off.,},
      recid = {226419},
      pages = {v, 21 p. :},
      address = {Washington,},
      year = {1972},
}