ISBN 9781287185222 books & textbook
Geothermal Energy, Clean Power from the Earth's Heat: Usgs Circular 1249
Duffield, Wendell a. Sass, John H. U. S. Department of the Interior, United
BiblioGov /2013-05-16 Paperback / 46 Pages
isbn-10: 1287185223 / isbn-13: 9781287185222
