TY - GEN AU - Plebanski, Tomasz AU - Cali, J Paul C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1978-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.SP.260-57 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1978 TI - Standard Reference Materials ::Guide to United States reference materials/ ER -