TY - GEN AU - Mendenhall, J R C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1973-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.TN.639 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1973 TI - Publications and services of the National Bureau of Standards Cryogenics Division Institute for Basic Standards, Boulder, CO 80302 1953 - 1972: ER -