Combs, Jim Exploration, confirmation and evaluation of the resource. En: Direct utilization of geothermal energy - San Francisco Department of Energy 1979 - 16 p. 0016 Geological considerations. Background considerations. Exploration techniques. Geological exploration. Geochemical exploration. Geophysical exploration. Drilling. ISSN: 0-934412-07-3 Subjects--Topical Terms: GEOTERMIARECURSOS GEOTERMICOSINGENIERIA GEOTERMICAGEOLOGIA Subjects--Geographic Terms: USA Dewey Class. No.: 333.88 / A5451