Results of the EC geothermal energy research / Proceedings of the second international seminar on the results of................................4-6 March, 1980 - London: D Reidel Publishing Company, 1980 - xvi, 1086p. ISBN: 90-277-1138-0 Subjects--Topical Terms: Proceedings Universal Decimal Class. No.: 620.91:551.23](082.2) / M0