TY - GEN AU - Utech, H C2 - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD DA - 1974-07-01 LA - en PB - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD PY - 1974 TI - Fire Department Ground Ladders: Results of a Preliminary Study. ER -