1. A rational conservation program for such migratory fishes as the salmon must be based on a knowledge of (a) whether or not the species consists of local, self-perpetuating populations and (b) the nature and extent of the oceanic migrations.
2. The conservation of a species that is broken up...
December 1, 1932 - June 30, 1934. "In changing from our former fiscal year ending of November 30th, we have for 1933 set up a short year -- all reports therin covering the period December 1st, 1932, to June 30th, 1933," p.3.
December 1, 1928 - November 30, 1930. Biennial report of the Department of Fish Culture of the State of Oregon to the Governor and the Thirty-Sixth Legislative Assembly, p.16-32.