TY - GEN AU - Foster, Harry D AU - Pinkston, Earl R AU - Ingberg, S H C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1951-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.BMS.120 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1951 TI - Fire resistance of walls of gravel-aggregate concrete masonry units: ER -