By Ku Timothy T.   Sweeney James M.   Shelburne Victor B.   in Southern Journal of Applied Forestry

ISSN:0148-4419|4|2|103-106

Society of American Foresters‎(1980)‎

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By Ku Timothy T.   Guldin James M.   Beasley R. Scott   in Journal of Forestry

ISSN:0022-1201|87|6|16-18

Society of American Foresters‎(1989)‎

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