TY - GEN AU - Bowman, H A AU - Schoonover, H A AU - Carroll, C L C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1975-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.75-768 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1975 TI - Reevaluation of the densities of the four NBS silicon crystal standards: ER -