Types of Geothermal Heat Pump Systems Reading List
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Rafferty, K. (February 2001). "An Information Survival Kit for the Prospective Geothermal Heat Pump Owner." (PDF 229 KB). Geo-Heat Center, Oregon Institute of Technology.
"Heat from the Earth: Geothermal Heat Pumps." (October 1996). The Family Handyman (46:9); pp. 9-12.