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GEOTHERMAL ENERGY: TECHNOLOGICAL ASPECTS OF EXPLOITATIONARMSTEAD HCH.1979; PHYS. IN TECHNOL.; GBR; DA. 1979; VOL. 10; NO 6; PP. 244-251Article

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GEOTHERMAL ECONOMICSARMSTEAD HCH.sdIN: GEOTHERMAL ENERGY; PARIS UNESCO (EARTH SCI. 12),1973, P. 161 A 174Book

FUTURE PROSPECTS FOR GEOTHERMAL ENERGYARMSTEAD HCH.1980; PHYS. IN TECHNOL.; GBR; DA. 1980; VOL. 11; NO 1; PP. 2-7; BIBL. 7 REF.Article

THE FUTURE OF GEOTHERMAL ENERGY.ARMSTEAD HCH.1978; J. INST. FUEL; GBR; DA. 1978; VOL. 51; NO 407; PP. 109-118; BIBL. 8 REF.Article

ENVIRONMENTAL FACTORS AND WASTE DISPOSAL.ARMSTEAD HCH.1976; IN: PROC. 2ND U.N. SYMP. DEV. USE GEOTHERM. RESOUR.; SAN FRANCISCO; 1975; WASHINGTON; U.S. GOV. PRINT. OFF.; DA. 1976; VOL. 2; PP. 1313-1442; BIBL. DISSEM.; 139 ILL.Conference Paper

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SYSTEMATIC APPROACH TO GEOTHERMAL DEVELOPMENT. = APPROCHE SYSTEMATIQUE DU DEVELOPPEMENT DE L'ENERGIE GEOTHERMIQUEARMSTEAD HCH; GORHAN HL; MULLER H et al.1974; GEOTHERMICS; ITALY; DA. 1974; VOL. 3; NO 2; PP. 41-52; BIBL. 11 REF.; 2 ILL.Article