TY - SER AU - Michele Schantz AU - Bruce Benner AU - S. Chesler AU - Richard Christensen AU - B. Koster AU - J. Kurz AU - Reenie Parris AU - Stephen Wise C2 - National Oceanic and Atmospheric Administration, Silver Spring, MD DA - 1993-07-01 LA - en PB - National Oceanic and Atmospheric Administration, Silver Spring, MD PY - 1993 TI - NIST Methods for Certification of SRM 1941 and SRM 1974 ER -