United States Department of Agriculture, Natural Resources Conservation Service and Forest Service ; in cooperation with United States Department of the Interior, Bureau of Indian Affairs and Bureau of Land Management, and Montana Agricultural Experiment Station
United States Department of Agriculture, Forest Service and Natural Resources Conservation Service ; in cooperation with Montana Agricultural Experiment Station
prepared by United States Department of Agriculture, Economic Research Service, Forest Service, Soil Conservation Service ; in cooperation with Montana Department of Natural Resources and Conservation ; under direction of USDA Field Advisory Committee