TY - GEN AU - S F Tillman C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1928-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.CSM.45 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1928 TI - Monthly news bulletin of Commercial Standards Group, Bureau of Standards December 15, 1928: ER -