@article{226800,
      author = {Kosanke, Robert M.},
      url = {http://library.usi.edu/record/226800},
      title = {Palynological studies of Middle Pennsylvanian coal beds of  the proposed Pennsylvania System stratotype in West  Virginia /},
      publisher = {U.S. G.P.O. ;},
      recid = {226800},
      pages = {vi, 73 p., 3 leaves of plates :},
      address = {Washington :},
      year = {1988},
}