Specification of Samuel Hallsworth and Richard Bailes
Subtitle: treating and clarifying sewage, &c
Contributors: Bailes, Richard
Publisher: Great Seal Patent Office
Published: 1875
Place of publication: London
Language: eng
Subjects: Sewage; Prevention & control; Water Pollution; Pyrites; Filters and filtration
Notes: Cover title.

At head of title: A.D. 1874, 9th October. No. 3459.

"Samuel Hallsworth, of Armley, near Leeds, and Richard Bailes, of Woodhouse Carr, Leeds, both in the county of York".