@misc{1190156, author = {B C Son}, title = {Fire endurance test of an interdwelling double wall constructed of polyurethane foam-filled sandwich panels:}, year = {1973}, month = {1973-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.IR.73-170}, language = {en}, }