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Combined display of all available logs of Open Source Ecology. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

• 12:07, 27 September 2013 VDP talk contribs uploaded File:Counter current air to air heat exchanger.png (Close up of the counter current air-to-air heat exchanger shown in Heat_recovery_ventilation_schematic.png The design was based on the images at http://www.southcoasttech.ca/fig1.gif and http://commons.wikimedia.org/wiki/File:Heat_exchanger.jpg *1: fr...)