TY - GEN AU - Jeffrey W. Bullard C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2014-05-01 04:05:00 DO - https://doi.org/10.6028/NIST.SP.1173 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2014 TI - Virtual Cement and Concrete Testing Laboratory : version 9.5 user guide: ER -