@article{69454,
      note = {Includes index.},
      author = {Haystead, Ladd, and Fite, Gilbert Courtland,},
      url = {http://library.usi.edu/record/69454},
      title = {The agricultural regions of the United States /},
      publisher = {University of Oklahoma Press,},
      recid = {69454},
      pages = {xx, 288 p., [12] leaves of plates :},
      address = {Norman, OK :},
      year = {1955},
}