Specification of William Parry and John Frearson
Subtitle: treating sewage
Contributors: Frearson, John
Publisher: Great Seal Patent Office
Published: 1867
Place of publication: London
Language: eng
Subjects: Sewage; Sewerage; Manures; Clay
Notes: Cover title.

At head of title: A.D. 1867, 1st March. No. 579.

"William Parry, of Birmingham, in the county of Warwick, mineral surveyor, and John Frearson, of Birmingham, aforesaid, mechanical engineer".