TY - GEN AU - Ince, Ahmet T AU - Strouse, Gregory F C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1997-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.260-127 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1997 TI - Standard Reference Materials ::Standard reference material 1747 / ER -