01307aam 2200373I 450 991071028730332120160121100808.0GOVPUB-C13-a23a2fa99309b3280674681ece8539ae(CKB)5470000002476410(OCoLC)935499027(EXLCZ)99547000000247641020160121d1979 ua 0engrdacontentrdamediardacarrierRecent improvements to the ASTM-type ultrasonic reference block system /Daniel J. ChwirutGaithersburg, MD :U.S. Dept. of Commerce, National Institute of Standards and Technology,1979.1 online resourceNBSIR ;79-17421979.Contributed record: Metadata reviewed, not verified. Some fields updated by batch processes.Title from PDF title page.Includes bibliographical references.Chwirut Daniel J1390278Chwirut Daniel J1390278United States.National Bureau of Standards.NBSNBSGPOBOOK9910710287303321Recent improvements to the ASTM-type ultrasonic reference block system3503726UNINA