Nitrate deposits in eastern Oregon

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Photo credit: © ART Collection / Alamy / Afripics
License: Licensed
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Keywords: 1905-1910, archives, circa, dc:identifier=archives3118, dc:identifier=archives:3118, flickr_home, flickrhome, industries, oregon, oregonindustries, oregonindustriescirca19051910, osu, osuarchives, takeatrip, trip