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http://dx.doi.org/10.1139/B11-009DOI Link
http://www.nrcresearchpress.com/doi/pdf/10.1139/b11-00903/15/2012PDF ReaderItem is within a limited-access website
http://www.nrcresearchpress.com/doi/full/10.1139/b[...]03/15/2012Item is within a limited-access website