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![]() Date: 2009-04-28 16:18:23Heat pumps Energy conversion Heating Alternative energy Geothermal heating Geothermal power in New Zealand Wairakei Geothermal gradient Geothermal heat pump Energy Geology Geothermal energy | Source URL: www.nzgeothermal.org.nzDownload Document from Source WebsiteFile Size: 1,16 MBShare Document on Facebook |