@article{N 94-13183,
      recid = {179667},
      author = {Howell, R. and DeVincenzi, Donald L.},
      title = {Planetary protection implementation on future Mars lander  missions [microform] /. U.S./Russian Workshop on Planetary  Protection Implementation on Future Mars Lander Missions},
      publisher = {National Aeronautics and Space Administration, Ames  Research Center ;},
      address = {Moffet Field, Calif. :},
      number = {N 94-13183},
      pages = {1 v.},
      year = {1993},
      note = {Distributed to depository libraries in microfiche.},
      url = {http://library.usi.edu/record/179667},
}