Report on European sewerage systems : with special reference to the needs of the City of Philadelphia no. VII, final, resumé and conclusions with reference to the City of Philadelphia / by Rudolph Hering.

Sewage and solid refuse removal / Rudolph Hering.

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Rudolph Hering

Works from the collections

Report on European sewerage systems : with special reference to the needs of the City of Philadelphia no. VII, final, resumé and conclusions with reference to the City of Philadelphia / by Rudolph Hering.

Sewage and solid refuse removal / Rudolph Hering.