@article{16664,
      note = {First published in 1944 under title: Rockets.},
      author = {Ley, Willy,},
      url = {http://library.usi.edu/record/16664},
      title = {Rockets, missiles, and space travel.},
      publisher = {Viking Press,},
      recid = {16664},
      pages = {xii, 436 p.},
      address = {New York,},
      year = {1951},
}