1 option
Geothermal energy resources and research. Hearings, pursuant to S. Res. 45, a national fuels and energy policy study, Ninety-second Congress, second session ... June 15 and 22, 1972. [1972]
The Penn Libraries is committed to describing library materials using current, accurate, and responsible language. If you discover outdated or inaccurate language, please fill out this feedback form to report it and suggest alternative language.