The Aging of Lakes Movie Review 1971

Introduces geological and ecological factors of normal aging of lakes and shows how man is speeding up this natural process by indiscriminate disposal of sewage, fertilizers, and industrial waste.

Distribution

Encyclopedia Britannica, 331 N. LaSalle St., Chicago, IL 60610, Phone: (312)347-7159, Toll-free: 800-323-1229, Fax: (312)294-2104, URL: http://www.britannica.com

Available on VHS
Running time 14 minutes.

Cast and Crew

Genres

Ecology & Environment

Producer

Encyclopedia Britannica Educational Corporation