@article{64533,
      recid = {64533},
      author = {Khawaja, Ikram U.},
      title = {Pyrite in the Springfield Coal Member (V) Petersburg  Formation, Sullivan County, Indiana /},
      publisher = {State of Indiana, Dept. of Natural Resources, Geological  Survey,},
      address = {Bloomington :},
      pages = {24 p., [1] fold. leaf of plates :},
      year = {1975},
      url = {http://library.usi.edu/record/64533},
}