ARMSTEAD, C. H. Geothermal energy its past, present and future contributions to the energy needs of man. E & FN Spon Ltd.
Chicago Style (17th ed.) CitationARMSTEAD, Christopher H. Geothermal Energy Its Past, Present and Future Contributions to the Energy Needs of Man. E & FN Spon Ltd.
MLA (8th ed.) CitationARMSTEAD, Christopher H. Geothermal Energy Its Past, Present and Future Contributions to the Energy Needs of Man. E & FN Spon Ltd.
Warning: These citations may not always be 100% accurate.