@misc{75726,
  author = {H Utech},
  title = {Fire Department Ground Ladders: Results of a Preliminary Study.},
  year = {1974},
  month = {1974-07-01},
  publisher = {NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD},
  language = {en},
}