Specification of John Hughes Lloyd
Subtitle: utilizing and deodorizing sewage matters
Publisher: Great Seal Patent Office
Published: 1871
Place of publication: London
Language: eng
Number of pages: 22
Subjects: Sewage; Sewerage; Toilets; Deodorization
Notes: Cover title.

At head of title: A.D. 1870, 20th July. No. 2047.

"John Hughes Lloyd, M.D., of Llangefni, in the county of Anglesey, North Wales".