TY - GEN AU - Silsbee, Francis B C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1952-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.CIRC.531 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1952 TI - Circular of the Bureau of Standards no. 531::extension and dissemination of the electrical and magnetic units by the National Bureau of Standards ER -