TY  - RPRT
TI  - Letter Circular 229: the fire resistance of brick walls made of concrete or sand-lime bricks
PY  - 1927
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 229
DO  - 10.6028/NBS.LCIRC.229
ER  -