Specification of John Hart
Subtitle: separating, distributing, and utilizing sewage
Publisher: Great Seal Patent Office
Published: 1870
Place of publication: London
Language: eng
Number of pages: 14
Subjects: Sewage; Sewerage; Filters and filtration; Manures; Sewage disposal plants; Deodorization
Notes: Cover title.

At head of title: A.D. 1869, 3rd July. No.2016.

"John Hart, of Leamington, in the county of Warwick".