This free course was written by David King.
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Figure 1: © US Federal Government
Figure 2: © Good, Jack; Michie, Donald; Timms, Geoffrey (1945) General Report on Tunny: With Emphasis on Statistical Methods, UK Public Record Office HW 25/4 and HW 25/5
Section 3 figure: © geralt; Pixabay
Section 5 figure: © Oscar Wong; Getty Images
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