@article{390598,
      recid = {390598},
      author = {Machholz, Don,},
      title = {The observing guide to the Messier marathon a handbook and  atlas / [electronic resource] :},
      publisher = {Cambridge University Press,},
      address = {Cambridge, UK ;},
      pages = {xiii, 157 p. :},
      year = {2002},
      url = {http://library.usi.edu/record/390598},
}