TY - GEN AU - Duewer, David L. AU - Kline, Margaret C. AU - Margolis, Sam A. AU - May, Willie E. AU - Sharpless, Katherine E. AU - Thomas, Jeanice B. C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2014-12-01 05:12:00 DO - https://doi.org/10.6028/NIST.IR.7880-31 LA - en PB - , 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 -