Ottmar, R. D., & Hardy, C. C. (1989). Stereo photo series for quantifying forest residues in coastal Oregon forests: Second-growth Douglas-fir--western hemlock type, western hemlock--Sitka spruce type, and red alder type. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, Siuslaw National Forest.
Chicago Style (17th ed.) CitationOttmar, Roger D., and Colin C. Hardy. Stereo Photo Series for Quantifying Forest Residues in Coastal Oregon Forests: Second-growth Douglas-fir--western Hemlock Type, Western Hemlock--Sitka Spruce Type, and Red Alder Type. Portland, Or.: U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, Siuslaw National Forest, 1989.
MLA (9th ed.) CitationOttmar, Roger D., and Colin C. Hardy. Stereo Photo Series for Quantifying Forest Residues in Coastal Oregon Forests: Second-growth Douglas-fir--western Hemlock Type, Western Hemlock--Sitka Spruce Type, and Red Alder Type. U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Research Station, Siuslaw National Forest, 1989.