@article{184503,
      recid = {184503},
      author = {Pontolillo, J. and Stanton, R. W.},
      title = {Coal petrographic laboratory procedures and safety manual  II [microform] /},
      publisher = {U.S. Dept. of the Interior, Geological Survey ;},
      address = {[Reston, Va.] :},
      pages = {1 v. (various pagings) ;},
      year = {1994},
      note = {Distributed to depository libraries in microfiche.},
      url = {http://library.usi.edu/record/184503},
}