@article{200146,
      note = {Distributed to depository libraries in microfiche.},
      author = {Nichols, Thomas C.},
      url = {http://library.usi.edu/record/200146},
      title = {Investigation of foundation problems related to heaving of  soils and weathered bedrock in the Pierre Shale southwest  of Denver, Colorado [microform] /},
      publisher = {U.S. Geological Survey :},
      recid = {200146},
      pages = {1 v.},
      address = {[Denver, CO] :},
      year = {1991},
}