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2 résultats pour : solar energy companies 1970s

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John Keyes, president of International Solarthermics Corporation, shown with the backyard solar heating system he developed... 05 1975
UMG22A38_485

John Keyes, president of International Solarthermi...

Flat plate solar heating collectors built by the Solaron Corporation, and installed on the roof of the Gump Glass Company... 05 1975
UMG22A38_483

Flat plate solar heating collectors built by the S...