543; 



Inventory of U.S. Exploratory Longline 

 Fishing Effort and Catch Rates for Tunas 

 and Swordfish in the Northwestern 

 Atlantic, 1957-65 



By Peter C. Wilson and Martin R. Bartlett 



SPECIAL SCIENTIFIC REPORT-FISHERIES Na 543 



UNITED STATES DEPARTMENT OF THE INTERIOR 



FISH AND WILDLIFE SERVICE 

 B U R E AlTof^OMMERCiArF ISHERIE^ 



