@article{229732,
      author = {Clark, Sandra H. B. and Mosier, Elwin L.},
      url = {http://library.usi.edu/record/229732},
      title = {Barite nodules in Devonian shale and mudstone of western  Virginia /},
      publisher = {U.S. G.P.O. ;},
      recid = {229732},
      pages = {iv, 30 p. :},
      address = {[Washington, D.C.] :},
      year = {1989},
}