Specification of David Gill
Subtitle: deodorizing sewage, &c
Publisher: Great Seal Patent Office
Published: 1875
Place of publication: London
Language: eng
Subjects: Sewage; Sewer gas; Sewerage; Deodorization; Chlorine
Notes: Cover title.

At head of title: A.D. 1875, 23rd January. No. 268.

"David Gill, of the town of Weston-super-Mare, in the county of Somerset".