@article{250634,
      author = {Melnick, Alan L.},
      url = {http://library.usi.edu/record/250634},
      title = {Introduction to geographic information systems in public  health /},
      publisher = {Aspen Publishers,},
      recid = {250634},
      pages = {xvii, 300 p. :},
      address = {Gaithersburg, MD :},
      year = {2002},
}