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Karl B McKnight

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Common Mosses of the Southeastern United States Karl B McKnight, Joseph R. Rohrer, and Kirsten McKnight Ward
The first truly detailed field guide to the mosses of the region
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Common Mosses of the Northeast and Appalachians Karl B McKnight, Joseph R. Rohrer, Kirsten McKnight Ward, and Warren J. Perdrizet
A comprehensive guide to the mosses of the Northeast and Appalachians
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