TY  - RPRT
TI  - Letter Circular 865: dampness in masonry walls above grade (supersedes Letter Circular 721)
PY  - 1947
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 865
DO  - 10.6028/NBS.LCIRC.865
ER  -