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Published online by Cambridge University Press: 19 April 2010
page 990 note 4 The Drought of 1931–32 in Montana, North Dakota, South Dakota, Nebraska and Washington. Official Report of the Relief Operations of the American National Red Cross. — Washington D.C., The American Red Cross, 1932. In-8 (154 × 230), 37 p.Google Scholar
page 990 note 5 Voy. Bulletin international, février 1931, pp. 150–161; mars 1931, pp. 221–224.
page 990 note 6 Ibid., novembre 1931, pp. 1029–1033; février 1931, p. 173; juin 1932, pp. 515–519.
page 991 note 1 Voy. Bulletin international, août 1932, pp. 719–720.
page 992 note 1 Août 1932.