TY - JOUR AU - Paul Stutzman C2 - Cement and Concrete Composites DA - 2014-02-01 DO - https://doi.org/10.1520/ACEM20130093 LA - en PB - Cement and Concrete Composites PY - 2014 TI - Quantitative X-Ray Powder Diffraction Analysis of Portland Cements: Proficiency Testing for Laboratory Assessment ER -