File:EPA letter regarding DX geothermal heat pumps.jpg
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![File:EPA letter regarding DX geothermal heat pumps.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/EPA_letter_regarding_DX_geothermal_heat_pumps.jpg/442px-EPA_letter_regarding_DX_geothermal_heat_pumps.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 12:14, 3 January 2013 | ![]() | 607 × 823 (114 KB) | commons>Wrgj | {{subst:Upload marker added by en.wp UW}} {{Information |Description = {{en|EPA letter regarding DX geothermal heat pumps}} |Source = EarthLinked Technologies Inc. |Date = March 19, 2003 |Author = Stephen J Offutt }} |
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