01664nam 2200445Ia 450 991071112190332120180711121002.0GOVPUB-C13-57cb7e51cb3e4d04851c75c3b2a0c9c8(CKB)5470000002480795(OCoLC)959982937(OCoLC)995470000002480795(EXLCZ)99547000000248079520161006d1968 ua 0engtxtrdacontentcrdamediacrrdacarrierDevelopment, testing, and evaluation of visual landing aids consolidated progress report for the period April 1 to June 30, 1968 /Section PhotometryGaithersburg, MD :U.S. Dept. of Commerce, National Institute of Standards and Technology,1968.1 online resourceNBS report ;99041968.Contributed record: Metadata reviewed, not verified. Some fields updated by batch processes.Title from PDF title page.Includes bibliographical references.Development, testing, and evaluation of visual landing aids Landing aids (Aeronautics)TestingLanding aids (Aeronautics)TestingfastLanding aids (Aeronautics)Testing.Landing aids (Aeronautics)Testing.United States.National Bureau of Standards.NBSNBSOCLCOOCLCFOCLCQBOOK9910711121903321Development, testing, and evaluation of visual landing aids3353663UNINA