01234aam 2200373I 450 991071027800332120160121100808.0GOVPUB-C13-052d36d30cddcd15c91cbf954a683014(CKB)5470000002476504(OCoLC)935499570(EXLCZ)99547000000247650420160121d1981 ua 0engrdacontentrdamediardacarrierEvaluation of exit directional symbols /Neil D. LernerGaithersburg, MD :U.S. Dept. of Commerce, National Institute of Standards and Technology,1981.1 online resourceNBSIR ;81-22681981.Contributed record: Metadata reviewed, not verified. Some fields updated by batch processes.Title from PDF title page.Includes bibliographical references.Lerner Neil D1397254Lerner Neil D1397254United States.National Bureau of Standards.NBSNBSGPOBOOK9910710278003321Evaluation of exit directional symbols3530198UNINA