@article{229668,
      note = {"This bulletin is the result of studies undertaken for the  Morgantown Energy Technology Center of the U.S. Department  of Energy."},
      author = {Roen, John B. and Kepferle, Roy Clark,},
      url = {http://library.usi.edu/record/229668},
      title = {Petroleum geology of the Devonian and Mississippian black  shale of eastern North America /},
      publisher = {U.S. G.P.O.,},
      recid = {229668},
      pages = {1 v. (various pagings) :},
      address = {Reston, Va :},
      year = {1993},
}