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http://dx.doi.org/10.1603/EN10266DOI Link
http://vegetable.ent.msu.edu/images/McGraw-et-al-2[...]04/13/2011PDF Reader
http://www.bioone.org/doi/full/10.1603/EN10266?pre[...]04/13/2011Item is within a limited-access website
http://www.bioone.org/doi/pdf/10.1653/0015-4040(20[...]04/13/2011PDF ReaderItem is within a limited-access website