By Nyland Ralph D.   in Northern Journal of Applied Forestry

ISSN:0742-6348|22|2|111-116

Society of American Foresters‎(2005)‎

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By Nyland Ralph D.   in Northern Journal of Applied Forestry

ISSN:0742-6348|25|3|161-163

Society of American Foresters‎(2008)‎

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By Nyland Ralph D.   in Northern Journal of Applied Forestry

ISSN:0742-6348|21|4|220-221

Society of American Foresters‎(2004)‎

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By Nyland Ralph D.   in Journal of Forestry

ISSN:0022-1201|90|1|33-37

Society of American Foresters‎(1992)‎

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By Nyland Ralph D.   in Journal of Forestry

ISSN:0022-1201|108|8|419-420

Society of American Foresters‎(2010)‎

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By Nyland Ralph D.   in Journal of Forestry

ISSN:0022-1201|96|7|18-21

Society of American Foresters‎(1998)‎

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By Wang Ziyin   Nyland Ralph D.   in Northern Journal of Applied Forestry

ISSN:0742-6348|13|4|189-194

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By Heitzman Eric   Nyland Ralph D.   in Northern Journal of Applied Forestry

ISSN:0742-6348|8|3|111-115

Society of American Foresters‎(1991)‎

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By Nyland Ralph D.   Kiernan Diane   in Northern Journal of Applied Forestry

ISSN:0742-6348|27|2|75-77

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By Engelman Heather M.   Nyland Ralph D.   in Northern Journal of Applied Forestry

ISSN:0742-6348|23|3|166-175

Society of American Foresters‎(2006)‎

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