@article{199654,
      note = {Cover title.},
      author = {Brooks, William E. and Nunez, Fernando.},
      url = {http://library.usi.edu/record/199654},
      title = {Road reconnaissance of anomalous radioactivity in the  Early Proterozoic Roraima Group near Santa Elena de Uairen,  Estado Bolivar, Venezuela [microform] /},
      publisher = {U.S. Geological Survey :},
      recid = {199654},
      pages = {i, 10 p. :},
      address = {Denver, CO :},
      year = {1991},
}