Specification of Alexander Melville Clark
Subtitle: treating sewage
Publisher: Great Seal Patent Office
Published: 1876
Place of publication: London
Language: eng
Subjects: Deodorization; Sewage; Prevention & control; Water Pollution; Sewage disposal plants; Filters and filtration
Notes: Cover title.

At head of title: A.D. 1875, 8th September. No. 3162.

"Alexander Melville Clark, of 53, Chancery Lane, in the County of Middlesex, patent agent".