@article{120360,
      recid = {120360},
      author = {Walker, A. S. and Robinove, Charles Joseph,},
      title = {Annotated bibliography of remote sensing methods for  monitoring desertification /},
      publisher = {U.S. Geological Survey,},
      address = {Alexandria, VA :},
      pages = {iii, 25 p. :},
      year = {1981},
      url = {http://library.usi.edu/record/120360},
}