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Sanitation
Emscher Tank Installation at Essen Nord, Germany
Effects of Expansion of Gas Bubbles in Enscher Sludge Shown in Right-Hand Cylinder
Drain water from sludges obtained from sedimentation, septic and Emscher tanks
Car 5615, later P-16 and the second D-31, Brill, 1911, Curtis C-1112 trucks
Swimmers at Pier 126, Delaware River, July 15, 1918
Allegheny Avenue Sewer at Pier 126, 1918
Devereaux Street Sewer, Philadelphia magazine, 1911
Privy Regulations
Privies, Emerald Street, 1919