@article{033-000-00687-0,
      recid = {180224},
      author = {Hall, R. Cargill.},
      title = {Essays on the history of rocketry and astronautics :  proceedings of the third through the sixth history symposia  of the International Academy of Astronautics /},
      publisher = {National Aeronautics and Space Administration,       Scientific and Technical Information Office :},
      address = {Washington :},
      number = {033-000-00687-0},
      pages = {2 v. :},
      year = {1977},
      note = {Symposia sponsored by International Academy of  Astronautics and   held at Mar del Plata, Argentina, Oct.  10, 1969; Constance, German Federal      Republic, Oct.  11-12, 1970; Brussels, Belgium, Sept. 23, 1971; Vienna,  Austria, Oct. 13, 1972.},
      url = {http://library.usi.edu/record/180224},
}