TY - BOOK ID - 136936265 TI - Development, testing, and evaluation of visual landing aids : consolidated progress report for the period July 1 to September 30, 1968 AU - Photometry Section. AU - United States. PY - 1968 PB - Gaithersburg, MD : U.S. Dept. of Commerce, National Institute of Standards and Technology, DB - UniCat KW - Landing aids (Aeronautics) KW - Testing. UR - https://www.unicat.be/uniCat?func=search&query=sysid:136936265 AB - ER -