TY - GEN AU - Gregory F Strouse C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1995-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.260-124 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1995 TI - Standard Reference Materials ::Standard reference material 1744 / ER -