TY - GEN AU - Petersen, Perry H C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1943-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.BMS.96 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1943 TI - Properties of a porous concrete of cement and uniform-sized gravel: ER -