TY  - RPRT
TI  - Letter Circular 973: list of published material relating to building regulation (superseding Letter Circular 928)
PY  - 1949
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 973
DO  - 10.6028/NBS.LCIRC.973
ER  -