TY - GEN AU - Koeser, R L C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1968-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.SP.297 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1968 TI - Report of the 52nd National Conference on Weights and Measures, 1967: ER -