01470nam 2200433Ia 450 991071115270332120180711121004.0GOVPUB-C13-0860f1adf85740c65c2030b832f382e3(CKB)5470000002480484(OCoLC)959983056(OCoLC)995470000002480484(EXLCZ)99547000000248048420161006d1956 ua 0engtxtrdacontentcrdamediacrrdacarrierVisual ranges of four obstruction lights /F.C. Breckenridge, Robert T. VaughanGaithersburg, MD :U.S. Dept. of Commerce, National Institute of Standards and Technology,1956.1 online resourceNBS report ;46591956.Contributed record: Metadata reviewed, not verified. Some fields updated by batch processes.Title from PDF title page.Includes bibliographical references.Neon lightingTestingNeon lightingTesting.Breckenridge F. C1400233Breckenridge F. C1400233Vaughan Robert T297119United States.National Bureau of Standards.NBSNBSOCLCOOCLCQBOOK9910711152703321Visual ranges of four obstruction lights3533044UNINA