By Hermann Richard K.   Doerksen Allan H.   in Journal of Forestry

ISSN:0022-1201|66|2|122-123

Society of American Foresters‎(1968)‎

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By Doerksen Allan H.   Mitchell Russell G.   in Forest Science

ISSN:0015-749X|11|2|181-188

Society of American Foresters‎(1965)‎

Access to resources Favorite 13.374329