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Courtesy of California State Polytechnic University, Pomona, ENV Archives-Special Collections
http://www.oac.cdlib.org/ark:/13030/c8v69m97/?order=1
Title:
“Copper solar collectors. Now delivering practical, economical energy in every kind of building under the sun.”
Date:
September, 1977
Contributing Institution:
California State Polytechnic University, Pomona, ENV Archives-Special Collections