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Oregon Field Guide

Bighorn Sheep

OPB | Feb. 1, 1991 7:30 p.m.

Bighorn sheep from the Hart Mountain Antelope Refuge are transplanted to other areas.

Oregon Field Guide

Steens Mountain Climate

OPB | Feb. 1, 1991 7:30 p.m.

This area is being examined for records of climatic changes going back thousands of years.

Oregon Field Guide

T.R.I.S.

OPB | Feb. 1, 1991 7:30 p.m.

T.R.I.S., the Trails Information System, provides computerized hiking information.

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Glacier Caves: Mt Hood's Secret World (2501)

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Major Support Provided By: Dorothy D. Gage

Additional Support Provided By: the Coit Family Foundation, Fred and Clara Dolen Charitable Foundation, Kay Kitagawa and Andy Johnson-Laird, Christine and David Vernier, and the Greenfield/Hartline Habitat Conservation Fund of the Nature Conservancy.

Special thanks for support by: The Roundhouse Foundation, Jon and Nancy Decherd, Bonnie and Peter Reagan