@article{923622,
      recid = {923622},
      author = {Guo, Huadong. and Goodchild, Michael F. and Annoni,  Alessandro.},
      title = {Manual of Digital Earth /},
      pages = {1 online resource (xix, 852 pages) :},
      url = {http://library.usi.edu/record/923622},
}