TY - GEN AU - Simon Kaplan AU - Leonard Hanssen C2 - Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD DA - 2001-05-01 LA - en PB - Special Publication (NIST SP), National Institute of Standards and Technology, Gaithersburg, MD PY - 2001 TI - Standard Reference Materials: Infrared Transmittance Standards--SRM's 2053, 2054, 2055, and 2056 ER -