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Editions
U.S. Forest Service, for sale by the Supt. of Docs., U.S. Govt. Print. Off.
1966
Slightly rev. Nov. 1978.
Dept. of Agriculture, Forest Service
1978
Slightly rev.
U.S. Dept. of Agriculture, Forest Service; for sale by the Supt. of Docs., U.S. Govt. Print. Off.
1969
Slightly rev. Nov. 1978.
Dept. of Agriculture, Forest Service : for sale by the Supt. of Docs., U.S. Govt. Print. Off.