"Correlation between fluctuations in abundance of the pacific sardine (" by Lionel A. Walford
 

Abstract

In the course of studying several seasons' statistics on the age composition of the commercial catch of the Pacific sardine (Sardinops caerulea) I have found what appears to be a fairly indicative measure of year-class strength in the total number of three-year-old fish caught by commercial fishermen in all Pacific Coast ports of United States and Canada....

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