TY - BOOK AU - Wahl,Edward F. TI - Geothermal energy utilization SN - 0471023043 AV - TJ280.7 .W33 U1 - 621.4 PY - 1977/// CY - New York PB - Wiley KW - Geothermal engineering KW - Local N1 - "A Wiley-Interscience publication."; Includes bibliographical references and index ER -