Specification of George Rydill
Subtitle: purifying sewage, &c
Publisher: Great Seal Patent Office
Published: 1875
Place of publication: London
Language: eng
Number of pages: 12
Subjects: Water Pollution; Sewage; Sewerage; Prevention & control; Sewage disposal plants; Filters and filtration
Notes: Cover title.

At head of title: A.D. 1875, 14th January. No.150.

"George Rydill, of 8, Quality Court, Chancery Lane, in the county of Middlesex".