@article{241552,
      note = {Chiefly tables.},
      author = {Roberts, Carter W.},
      url = {http://library.usi.edu/record/241552},
      title = {Principal facts for more than 700 new gravity stations in  the San Francisco North and San Francisco South  quadrangles, California [microform] /},
      publisher = {U.S. Geological Survey,},
      recid = {241552},
      pages = {29 p. :},
      address = {Menlo Park, Calif. :},
      year = {1991},
}