Specification of James Robey
Subtitle: charcoal for purifying sewage, &c
Publisher: Great Seal Patent Office
Published: 1873
Place of publication: London
Language: eng
Subjects: Sewage; Sewerage; Filters and filtration; Charcoal; Disinfection and disinfectants
Notes: Cover title.

At head of title: A.D. 1873, 20th January. No. 230.

"James Robey, of the city of Manchester, sugar refiner."