By Felder F.   Hopper G.   Lukens J.   in The Electricity Journal

ISSN:1040-6190|11|7|75-81

Elsevier‎(1998)‎

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By Hopper G. M.   Smith D. Wm.   Parrish D. J.   in Forest Science

ISSN:0015-749X|31|1|31-39

Society of American Foresters‎(1985)‎

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By Sharik T. L.   Ross M. S.   Hopper G. M.   in Forest Science

ISSN:0015-749X|29|2|221-224

Society of American Foresters‎(1983)‎

Access to resources Favorite 6.4230185