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Start Over Authors District of Columbia, enacting jurisdiction. ✖Remove constraint Authors: District of Columbia, enacting jurisdiction. Titles Plumbing regulations of the District of Columbia: adopted February 15, 1893, by the Commissioners of said district ✖Remove constraint Titles: Plumbing regulations of the District of Columbia: adopted February 15, 1893, by the Commissioners of said district Dates by Range 1850-1899 ✖Remove constraint Dates by Range: 1850-1899

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