FRESH-WATER MUSSELS AND MUSSEL INDUSTRIES 



OF THE UNITED STATES : : : By Robert E. Coker 



From BULLETIN OF THE BUREAU OF FISHERIES, Volume XXXVI, 1917-18 



Document No. 863 : : : : : : : • .' • ' • • • Issued October 23, 1919 





PRICE, 40 CENTS 



Sold only by the Superintendent of Documents, Government Printing Office, Washington, D. C. 



WASHINGTON ;::::: GOVERNMENT PRINTING OFFICE : : 



: 1919 



