Transcriber's note:
A list of corrections made can be found at the end of the book.
Click on the images to see higher resolution scans.
DEPARTMENT OF COMMERCE
BUREAU OF FISHERIES
HUGH M. SMITH, Commissioner
THE PROTECTION OF FRESH-WATER MUSSELS
By R. E. Coker, Ph. D.
Director U. S. Biological Station
Fairport, Iowa
Bureau of Fisheries Document No. 793