By Ursic S. J.   in Journal of Forestry

ISSN:0022-1201|54|12|815-816

Society of American Foresters‎(1956)‎

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By Ursic S. J.   in Journal of Forestry

ISSN:0022-1201|64|11|728-730

Society of American Foresters‎(1966)‎

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By Griffing C. G.   Ursic S. J.   in Forest Science

ISSN:0015-749X|23|3|351-354

Society of American Foresters‎(1977)‎

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