TY  - RPRT
TI  - Letter Circular 702: home heating problems (superseding Letter Circular 648)
PY  - 1942
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 702r1942
DO  - 10.6028/NBS.LCIRC.702r1942
ER  -