Cristy, Mark Timothy, 1946-2009-05-052009-05-051976-03Cristy, M. T. (1976). Control of visual pigment proportions in two anadromous fishes. Thesis (Ph.D.)--University of Oregon.https://hdl.handle.net/1794/9084x, 154 leaves : ill. ; 29 cm Typescript. (Another copy on microfilm is located in Archives) Thesis (Ph.D.)--University of Oregon Vita Bibliography: leaves 144-154en-USThreespine sticklebackSteelhead (Fish)Visual pigmentsThesis