By Welke Sylvia E.   in Journal of Sustainable Agriculture

ISSN:1044-0046|25|1|57-68

Haworth Press‎(2004)‎

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By Welke Sylvia E   Hope Graeme D   Hunt Gary A   in Canadian Journal of Forest Research

ISSN:1208-6037|33|5|847-853

NRC Research Press‎(2003)‎

Access to resources Favorite 3.1008344