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 12.471244

By Welke Sylvia E.   in Journal of Sustainable Agriculture

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

Haworth Press‎(2004)‎

Access to resources Favorite 4.996679