@article{760474,
      recid = {760474},
      author = {Thomas, Jonathan V.,},
      title = {Changes between early development (1930-60) and recent  (2005-15) groundwater-level altitudes and dissolved-solids  and nitrate concentrations in and near Gaines, Terry, and  Yoakum Counties, Texas /},
      pages = {15 maps on 2 sheets :},
      note = {Relief shown by contours and spot heights.},
      url = {http://library.usi.edu/record/760474},
}