By Koehn Anita C   Roberds James H   Doudrick Robert L   in Canadian Journal of Forest Research

ISSN:1208-6037|33|6|1102-1109

NRC Research Press‎(2003)‎

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By Roberds James H   Strom Brian L   Hain Fred P   Gwaze David P   McKeand Steven E   Lott Larry H   in Canadian Journal of Forest Research

ISSN:1208-6037|33|12|2469-2476

NRC Research Press‎(2003)‎

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By Zobel Bruce   Roberds James H.   Ralston James   in Journal of Forestry

ISSN:0022-1201|67|11|822-824

Society of American Foresters‎(1969)‎

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By Roberds James H.   Conkle M. Thompson   in Forest Science

ISSN:0015-749X|30|2|319-329

Society of American Foresters‎(1984)‎

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