Barber, Marshall Albert and Hacker, HP (1920) Hookworm and malaria research in Malaya, Java, and the Fiji Islands: report of Uncinariasis Commission to the Orient, 1915-1917.
Ritchie, TR (1920) 22. Report of public health problems in Western Samoa, File IT 8/12 (Part 1), New Zealand National Archives.
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