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How science and nature combine to purify water in a reservoir. Micro-cinematography shows the bacteria present in the water.
Year: 1927
Genre: Documentary
Studio: British Instructional Films Ltd.
Director: Mary Field
Cast:
Crew: F. Percy Smith (Director of Photography), Mary Field (Director)
Runtime: 6 minutes
Release: Jan 01, 1927
IMDb: 0.00/10 by 0 users
Popularity: 0
Country: United Kingdom
Language: English
Budget: 0
Revenue: 0
Keyword :
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