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U.S. BUREAU OF FISHERIES 



Lake fisheries of the United States, 19S2 — Continued 

 OPERATING UNITS OF LAKE MICHIGAN: i Br gear 



1 Includes operating units used in the mussel fisheries of streams tributary to Lakes Michigan, Huron, 

 and Erie. Those used in Lakes Erie and Huron are included herein to avoid disclosure of private enterprise. 



