By Goergen Michael T.   Floyd Donald W.   Ashton Peter G.   in Journal of Forestry

ISSN:0022-1201|95|1|8-12

Society of American Foresters‎(1997)‎

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By Pickens James B.   Kent Brian M.   Ashton Peter G.   in Forest Science

ISSN:0015-749X|36|3|665-679

Society of American Foresters‎(1990)‎

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