TY - GEN AU - Stutzman, Paul E C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1992-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.IR.4785 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1992 TI - X-ray powder diffraction analysis of three portland cement reference material clinkers: ER -