TY  - RPRT
TI  - Economical solar-heating for homes
AU  - Allred, J. W.
AU  - Shinn, J. M., Jr.
AU  - Kirby, C. E.
AU  - Barringer, S. R.
PY  - 1977
UR  - https://ntrs.nasa.gov/citations/19760000571
ID  - 19760000571
ER  -