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Published in: London Physical description: xi, 501 pages ; 23 cm

Published in: New York Physical description: xiv, 105p; 21cm

Defines geothermal energy and explains where and how it originates, its electric and non-electric uses, the process that changes earth heat into electricity, an...

Published in: Minneapolis Physical description: 64 pages ; 22 cm.

Published in: Philadelphia Physical description: 63 pages ; 22 cm.

Published in: San Francisco Physical description: 240P

Published in: Minneapolis, Minn. Physical description: 64p

Includes bibliographical references (pages 189-190) and index. Published in: Garden City, N. Y. Physical description: viii, 201 pages ; 22 cm

Published in: Rockville, Md. Physical description: 136P

Published in: Philadelphia ; New York Physical description: 192 pages ; 23 cm.