TY - GEN AU - Jeanice Brown AU - David Duewer AU - Kline Margaret AU - Sam Margolis AU - Willie May AU - Katherine Sharpless C2 - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD DA - 2014-12-19 DO - https://doi.org/10.6028/NIST.IR.7880-31 LA - en PB - NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD PY - 2014 TI - NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1993 Comparability Studies: Results for Round Robins XXVII, XXVIII, and XXIX Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 4 Ascorbic Acid in Human Se ER -