TY  - RPRT
TI  - Letter Circular 843: publications relating to building codes and construction practice home building -- building material specifications -- home maintenance (superseding Letter Circular 811)
PY  - 1947
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 843r1947
DO  - 10.6028/NBS.LCIRC.843r1947
ER  -