@article{115867,
      url = {http://library.usi.edu/record/115867},
      title = {Planetary exploration through year 2000 : a core program :  mission operations /},
      publisher = {U.S. G.P.O.,},
      recid = {115867},
      pages = {55 p. :},
      address = {Washington, D.C. :},
      year = {1986},
}