UNITED STATES DEPARTMENT OF THE INTERIOR, Stewart L. Udall, Secretary 



FISH AND WILDLIFE SERVICE, Clarence L. Pautzke, Commissioner 



Bureau of Commercial Fisheries, Donald L. McKernan, Director 



INFLUENCE OF EARLY MATURING 



FEMALES ON REPRODUCTIVE 



POTENTIAL OF COLUMBIA RIVER 



BLUEBACK SALMON (Oncorhynchus nerkd) 



By RICHARD L. MAJOR and DONOVAN R. CRADDOCK 



X 



FISHERY BULLETIN 194 



From Fishery Bulletin of the Fish and Wildlife Service 



VOLUME 61 



PUBLISHED BY THE U.S. FISH AND WILDLIFE SERVICE • WASHINGTON • 1952 

 PRINTED AT THE U.S. GOVERNMENT PRINTING OFFICE, WASHINGTON 



For sale by the Superintendent of Documents, U.S. Government Printing Office. Washlnftton 2.S, D.C. - Price 15 cent.s 



