332 



MYCOBACTERIAL INFECTIONS 

 IN ADULT SALMON AND STEELHEAD TROUT 

 RETURNING TO THE COLUMBIA RIVER BASIN 

 AND OTHER AREAS IN 1957 



Biological Laborati 



B R. A. B 



J JDS hole, 



SPECIAL SCIENTIFIC REPORT-FISHERIES No. 332 



UNITED STATES DEPARTMENT OF THE INTERIOR 

 FISH AND WILDLIFE SERVICE 



