TY - GEN AU - Gary W Kramer AU - Melody V Smith AU - John C Travis C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2000-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.260-140 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2000 TI - Standard Reference Materials:Technical specifications for certification of spectrophotometric NTRMs ER -