01671nam 2200445Ia 450 991071128320332120180711120950.0GOVPUB-C13-c904676a81098219a0a1c1131ad769f3(CKB)5470000002481186(OCoLC)957470591(OCoLC)995470000002481186(EXLCZ)99547000000248118620160829d1969 ua 0engtxtrdacontentcrdamediacrrdacarrierDevelopment, testing, and evaluation of visual landing aids consolidated progress report for the period October 1 to December 31, 1968 /Photometry SectionGaithersburg, MD :U.S. Dept. of Commerce, National Institute of Standards and Technology,1969.1 online resourceNBS report ;100061969.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.NBSNBSOCLCOOCLCFOCLCQBOOK9910711283203321Development, testing, and evaluation of visual landing aids3353663UNINA