TY - RPRT TI - Report of the 75th National Conference on Weights and Measures 1990 AU - Tholen, Albert D AU - Tholen, Albert D AU - Brickenkamp, Carroll S AU - Turner, Ann H PY - 1990 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 793 DO - 10.6028/NIST.SP.793 ER -