Pittsburgh (Pa.) Filtration Commission. Report of the Filtration Commission of the city of Pittsburgh, Pennsylvania, January, 1899.

Pittsburgh (Pa.) Filtration Commission.

Report of the Filtration Commission of the city of Pittsburgh, Pennsylvania, January, 1899.

[Pittsburgh, Pa. : The Commission, 1899?]

Robert Pitcairn, chairman.

Water-supply -- Pennsylvania -- Pittsburgh.

Filters and filtration.

Pitcairn, Robert, 1836-1909.

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