01323aam 2200385I 450 991071020980332120160318082757.0GOVPUB-C13-8dd5a210aaf11d08602cbb79590162e1(CKB)5470000002477193(OCoLC)945070873(EXLCZ)99547000000247719320160318d1983 ua 0engrdacontentrdamediardacarrierAn evaluation of exit symbol visibility /Belinda L. Collins; Neil D. LernerGaithersburg, MD :U.S. Dept. of Commerce, National Institute of Standards and Technology,1983.1 online resourceNBSIR ;83-26751983.Contributed record: Metadata reviewed, not verified. Some fields updated by batch processes.Title from PDF title page.Includes bibliographical references.Collins Belinda Lowenhaupt1390303Collins Belinda Lowenhaupt1390303Lerner Neil D1397254United States.National Bureau of Standards.NBSNBSGPOBOOK9910710209803321An evaluation of exit symbol visibility3545959UNINA