Listar por autor "Harrison, H.R."
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Repeated manual release in a young plantation: effect on douglas-fir seedlings, hardwoods, shrubs, ...
McDonald, Philip M.; Fiddler, G.O.; Harrison, H.R. (USDA Forest Service. Pacific Southwest Research Station, 1994)Douglas-fir seedlings on the Arcata Resource Area, Bureau of Land Management, U.S. Department of the Interior, in central coastal California, were released by chain sawing and grubbing competing ...