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1Published 1972“...North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture,...”
Government Document Serial -
2Published 1966“...North Central Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture,...”
Government Document Serial -
3Published 1968“...Dept. of Agriculture, Forest Service,...”
Government Document Serial -
4Published 1989“...Dept. of Agriculture, Forest Service, North Central Forest Experiment Station ; For sale by the Supt. of Docs., U.S. ...”
Government Document Book