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Keywords:
SEWAGE,
FARMS,
CITIES,
FARMING,
ECONOMICS,
PURIFICATION,
MAINS,
DRAINAGE,
IRRIGATION,
AGRICULTURE,
SEWERS,
DISPOSAL,
SLUDGE,
FILTERS,
FILTRATION,
PUBLIC HEALTH,
APPLICATIONS,
LAND,
BERLIN,
LONDON,
GERMANY,
EUROPE,
UK
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© Thomas Telford and ICE
1892
