Specification of Alexander Colvin Fraser and William Watson
Subtitle: treating and utilizing sewage
Contributors: Watson, William
Publisher: Great Seal Patent Office
Published: 1874
Place of publication: London
Language: eng
Subjects: Schists; Sewage disposal plants; Sewage; Filters and filtration; Manures
Notes: Cover title.

At head of title: A.D. 1874, 7th November. No. 3632.

"Alexander Colvin Fraser, of New Barnet, in the county of Herts, engineer, and William Watson, of Great Ayton, near Northallerton, in the county of York, chemist".