NASA NTRS · 19760000571
Economical solar-heating for homes
Abstract
Do-it-yourself supplementary solar-heating system is available for purchase at approximately $2,000. Report describes design, construction, testing, and economic analysis of low-cost solar heating system.
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Allred, J. W., Shinn, J. M., Jr., Kirby, C. E., Barringer, S. R.. 1977-03-01. Economical solar-heating for homes. https://ntrs.nasa.gov/citations/19760000571
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