Specification of Alfred Henry Hart and William Parry
Subtitle: treating sewage
Contributors: Parry, William, 1817-1888
Publisher: Great Seal Patent Office
Published: 1867
Place of publication: London
Language: eng
Subjects: Sewage; Sewerage; Manures; Clay
Notes: Cover title.

At head of title: A.D. 1867, 19th March. No.788.

"Alfred Henry Hart, of no.22 Gresham Street, in the city of London, manufacturer, and William Parry, of Birmingham, in the county of Warwick, mineral surveyor".