TY - RPRT TI - Report of the 66th National Conference on Weights and Measures 1981 AU - Wollin, Harold F AU - Barbrow, Louis E AU - Heffernan, Ann P PY - 1982 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS SP 629 DO - 10.6028/NBS.SP.629 ER -