TY - GEN AU - Baldwin, J R AU - Mavrodineanu, R C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1980-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.SP.260-68 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1980 TI - Standard Reference Materials ::Metal-on-quartz filters as a standard reference material for spectrophotometry - SRM 2031/ ER -