TY - GEN AU - Swanson, H E AU - McMurdie, H F AU - Morris, M C AU - Evans, E H C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1970-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.MONO.25-8 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1970 TI - Standard x-ray diffraction powder patterns: ER -