An important energy resource, biogas, can be produced by almost any organic material, including crop and forestry residues, animal wastes, human sewage, and food processing wastes.
Bullfrog Films, Inc., PO Box 149, Oley, PA 19547, Phone: (610)779-8226, Toll-free: 800-543-3764, Fax: (610)370-1978, Email: email@example.com, URL: http://bullfrogfilms.com
Available on VHS
Running time 25 minutes.
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