TY - GEN AU - Jeanice Brown AU - David Duewer AU - Margaret Kline AU - Willie May AU - Sam Margolis AU - Neal Craft AU - Katherine Sharpless C2 - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD DA - 2015-09-29 DO - https://doi.org/10.6028/NIST.IR.7880-34 LA - en PB - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD PY - 2015 TI - NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1990 Comparability Studies: Results for Round Robins XVIII, XIX, and XX Fat-Soluble Vitamins and Carotenoids in Human Serum ER -