TY  - RPRT
TI  - Letter Circular 647: list of published material relating to home building and maintenance (supersedes Letter Circular 287)
PY  - 1941
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 647
DO  - 10.6028/NBS.LCIRC.647
ER  -