TY - RPRT TI - Report of the 67th National conference on Weights and Measures 1982 AU - Tholen, Albert D AU - Barbrow, Louis E AU - Heffernan, Ann P PY - 1983 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS SP 645 DO - 10.6028/NBS.SP.645 ER -