Specification of Fran©ʹois Jules Fahlman
Subtitle: apparatus for treating sewage, &c
Publisher: Great Seal Patent Office
Published: 1872
Place of publication: London
Language: eng
Subjects: Sewage; Disinfection and disinfectants; Sewerage; Filters and filtration; Sewage disposal plants
Notes: Cover title.

At head of title: A.D. 1871, 29th November. No. 3233.

"Fran©ʹois Jules Fahlman, of Stockholm, in the Kingdom of Sweden".