Visitor rating
Includes an examination of freshwater ecosystems, the effects of damming and diversion, and scientific responsibilities for maintaining healthy ecosystems.
Bullfrog Films, Inc., PO Box 149, Oley, PA 19547, Phone: (610)779-8226, Toll-free: 800-543-3764, Fax: (610)370-1978, Email: video@bullfrogfilms.com, URL: http://bullfrogfilms.com
Available on VHS
Running time 59 minutes.
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