Keefe, MaryLouise. Investigations into the [Early] Life History of Spring Chinook Salmon in the Grande Ronde River Basin : Fish Research Project, Oregon : Annual Report 1994 : Project Period 1 June 1993 to 31 May 1994., report, April 1, 1996; (https://digital.library.unt.edu/ark:/67531/metadc897302/m1/1/: accessed October 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; .