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Report of the Watering Committee with the accompanying reports of Frederic Graff, Esq., Superintendent of Fairmount Water Works, on filtration, and Professors Booth and Garrett, on Schuylkill water
Report of the Watering Committee with the accompanying reports of Frederic Graff, Esq., Superintendent of Fairmount Water Works, on filtration, and Professors Booth and Garrett, on Schuylkill water