By Rudolph O.   in International Journal of Theoretical Physics

ISSN:0020-7748|39|3|871-884

Springer Publishing Company ‎(2000)‎

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By Oliver William W.   Lindquist James L.   Strothmann Rudolph O.   in Western Journal of Applied Forestry

ISSN:0885-6095|9|4|106-112

Society of American Foresters‎(1994)‎

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