By Coffman John D.   in Journal of Forestry

ISSN:0022-1201|39|2|84-91

Society of American Foresters‎(1941)‎

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By Coffman John D.   in Journal of Forestry

ISSN:0022-1201|33|7|658-661

Society of American Foresters‎(1935)‎

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By Coffman John D.   in Journal of Forestry

ISSN:0022-1201|35|2|210-214

Society of American Foresters‎(1937)‎

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