@article{6404,
      note = {"Preprinted from the annual report of the Chief to the  Director, Dept. of Registration and Education, for fiscal  year 1950-1951."},
      author = {Leighton, Morris M.},
      url = {http://library.usi.edu/record/6404},
      title = {Mineral resource research and activities of the State  Geological Survey, 1950-1951 /},
      recid = {6404},
      pages = {38 p. :},
      address = {Urbana,},
      year = {1951},
}