Specification of John Hadfield
Subtitle: manufacture of manure and other products from sewage matters
Publisher: Great Seal Patent Office
Published: 1858
Place of publication: London
Language: eng
Subjects: Manures; Sewage; Filters and filtration; Chalk; Dyes and dyeing
Notes: Cover title.

At head of title: A.D. 1858, 1st March. No. 400.

"John Hadfield, of Chelmsford, in the county of Essex, manufacturing chemist"