Gupta, Harsh K., 1942- Geothermal resources : an energy alternative / by Harsh K. Gupta. - Amsterdam : Elsevier Science, 1980. - 227 p. : ill. ; 25 cm. - Developments in economic geology ; vol. 12. . Includes index. ISBN: 0444418652 fl 135.00 Subjects--Topical Terms: Geothermal engineering.Geothermal resources.