Não informado. (1963). U.S. Forest Service Resource Bulletin INT. U.S. Forest Service.
Chicago-viite (17. p.)Não informado. U.S. Forest Service Resource Bulletin INT. Ogden, Utah: U.S. Forest Service, 1963.
MLA-viite (8. p.)Não informado. U.S. Forest Service Resource Bulletin INT. U.S. Forest Service, 1963.
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