This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it.

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This scientific monograph provides a comprehensive survey of the freshwater mussel fauna of central and northern Minnesota. The authors describe the various species found in the region and discuss their…

This is a reproduction of a book published before 1923. This book may have occasional imperfections such as missing or blurred pages, poor pictures, errant marks, etc. that were either…