Specification of Richard Dover
Subtitle: treating sewage
Publisher: Great Seal Patent Office
Published: 1871
Place of publication: London
Language: eng
Subjects: Sewage; Sewerage; Manures; Sewage disposal plants; Filters and filtration; Deodorization
Notes: Cover title.

At head of title: A.D. 1871, 24th March. No. 804.

"Richard Dover, of no.5, St. Stephen's Road, New Road, Hammersmith, in the county of Middlesex".