@article{200550,
      note = {Cover title.},
      author = {Bullock, John H.},
      url = {http://library.usi.edu/record/200550},
      title = {Analytical results of insoluble-residue samples from the  Paducah 1° x 2° quadrangle, Missouri, Illinois, and  Kentucky, drill holes nos. K1-K4 [microform] /},
      publisher = {U.S. Dept. of the Interior, Geological Survey :},
      recid = {200550},
      pages = {ii, 53 leaves :},
      address = {[Denver, CO] :},
      year = {1991},
}