An economical and efficient heating system for homes
[by Jerry O. Newman.
- Washington] Agricultural Research Service, U.S. Dept. of Agriculture [1967]
- 26 p. illus. 26 cm.
- [United States. Dept. of Agriculture] Production research report no. 99 .
- [United States. Department of Agriculture] Production research report no. 99. .
Bibliographical footnotes.
agr67000363
Dwellings--Heating and ventilation. Dwellings--Heating.