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Courtesy of UC Riverside, California Museum of Photography
http://www.oac.cdlib.org/ark:/13030/kt2n39p8df/?order=1
Title:
Uvalde Rock-Asphalt Mine, near Uvalde, Texas. Oil deposits - solid by other chemicals - soft far [?] - comes out every so often - gives the frustration to engineers. #39
Creator/Contributor:
Not Known
Gifford M. Mast
Date:
[Date not indicated]
Contributing Institution:
UC Riverside, California Museum of Photography