UNITED STATES DEPARTMENT OF THE INTERIOR, STEWART L. UDALL , SECRETARY 

 Fish and Wildlife Service, Clarence F. Pautzke, Commissioner 

 Bureau of Sport Fisheries and Wildlife, Daniel H. Janzen , Director 



MYCOBACTERIA IN ADULT SALMONID FISHES 



RETURNING TO NATIONAL FISH HATCHERIES 



IN WASHINGTON, OREGON, AND CALIFORNIA IN 1958-59 



By 

 A. John Ross 



Special Scientific Report—Fisheries No. 462 



Washington, D. C. 

 July 1963 



