By Williams Michael G.   in Cartography and Geographic Information Science

ISSN:1545-0465|19|5|315-320

Cartography and Geographic Information Society‎(1992)‎

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By Kelsey Rick G.   Joseph Gladwin   McWilliams Michael G.   in Canadian Journal of Forest Research

ISSN:1208-6037|41|6|1202-1211

NRC Research Press‎(2011)‎

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