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2. The geothermoelectric generation in Italy: planning strategies, experience gained during operation, and cost analysis.;Allegrini,1993
3. Government regulations on geothermal development and environmental protection in Indonesia;Aryawijaya,1997
4. Geothermal environmental impact;Armannsson;Geothermics,1992
5. Geothermal Energy;Armstead,1983