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Published online by Cambridge University Press: 19 April 2010
page 443 note 1 Revue internationale, 12e année, no 137, mai 1930, p. 340.
page 443 note 2 Journal of agricultural Research, t. 33, 1926, p. 177.
page 445 note 1 Desinfekt. und Gesundheitswes., 1929, t. XXI, no 7, juillet, pp. 169–172.