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Date decades ssim:1940-1949
Desc metadata language label sim:English$http://id.loc.gov/vocabulary/iso639-2/eng
Desc metadata lcsubject label sim:Dams$http://id.loc.gov/authorities/subjects/sh85035582 and Dams$http://id.loc.gov/authorities/subjects/sh85035582 and Locks (Hydraulic engineering)$http://id.loc.gov/authorities/subjects/sh85077979 and Hydroelectric power plants$http://id.loc.gov/authorities/subjects/sh85063399 and Hydroelectric power plants$http://id.loc.gov/authorities/subjects/sh85063399
Desc metadata rights label sim:Public Domain Mark 1.0$http://creativecommons.org/publicdomain/mark/1.0/