Specification of Alexander Melville Clark
Subtitle: treating sewage for manufacturing manure
Publisher: Great Seal Patent Office
Published: 1872
Place of publication: London
Language: eng
Subjects: Sewage; Manures; Guano; Hygiene
Notes: Cover title.

At head of title: A.D. 1871, 26th October. No. 2879.

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