Image: Illust passive solar d1

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Description: Passive solar heating illustration.
Title: Illust passive solar d1
Credit: http://www.eere.energy.gov/de/passive_solar_design.html
Author: http://www.eere.energy.gov
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

Image usage

The following 2 pages link to this image:

Energy conservation
Passive solar building design

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