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- Author(s):
- Pennsylvania Sanitation Company, author.
- Publication:
- [Philadelphia?] : [publisher not identified], [1897?]
- Subject(s):
- Water Purification -- methods
- Author(s):
- Gate City Stone Filter Co., author.
- Publication:
- New York : Gate City Stone Filter Co., [1885]
- Subject(s):
- Water Supply
Drinking Water
Water Purification -- methods
- Author(s):
- Currier, C. Gilman (Charles Gilman), author
- Publication:
- [Philadelphia?] : [publisher not identified], [1889?]
- Subject(s):
- Water Purification -- methods
Water Microbiology
- Publication:
- [Chad] : Ministère de la santé publique et des affaires sociales, [19--?]
- Subject(s):
- Cholera -- prevention & control
Water Purification -- methods
Food Handling -- methods
Sanitation
- Author(s):
- Maignen, P. A.
- Publication:
- Philadelphia : Maignen's Filtration Company, [1898?]
- Subject(s):
- Water Purification -- methods
Water Supply
Philadelphia
- Publication:
- [Washington, DC] : War Office, 1943
- Subject(s):
- Water Purification -- methods
Drinking
Military Personnel -- education
Warfare
Water Pollution
- Author(s):
- Leffmann, Henry, 1847-1930 author
- Publication:
- [Philadelphia?] : [publisher not identified], [1895?]
- Subject(s):
- Water Supply
Water Purification -- methods
