TY - GEN AU - Kirchhoff, William H C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1981-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.81-2280 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1981 TI - Technical activities of the Office of Environmental Measurements -- 1980: ER -