Specification of John Dales
Subtitle: applying deodorizing fluids to sewers, &c
Publisher: Great Seal Patent Office
Published: 1854
Place of publication: London
Language: eng
Subjects: Sewerage; Deodorization; Sewage
Notes: Cover title.

At head of title: A.D. 1859, 9th November. No. 2551.

"John Dales, of 11 and 12, Gresham House, Old Broad Street, in the city of London".