TY - GEN AU - E Richard Cohen AU - Barry N Taylor C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1987-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.SP.731 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1987 TI - Fundamental physical constants: ER -