@misc{1193486, author = {Harry D Foster and Earl R Pinkston and S H Ingberg}, title = {Fire resistance of walls of gravel-aggregate concrete masonry units:}, year = {1951}, month = {1951-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.BMS.120}, language = {en}, }