Field data for all lands except National Forests were collected by the Renew able Resources Evaluation Work Unit of the Pacific Northwest Forest and Range Experiment Station. Renewable Resources Evaluation (formerly Forest Survey) is a nationwide project of the Forest Service authorized by the Forest and Rangeland Renewable Resources Research Act of 1978.
Forest resource inventories are conducted throughout the 50 States by the usda Forest Service Experi ment Stations. The Pacific Northwest Forest and Range Experiment Station at Portland, Oregon, is responsible for forest resource inventories in the States of Alaska, California, Hawaii, Oregon, and Washington.
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