Bulletin of entomological research v. 12 June 1921/Feb. 1922
Chemical abstracts Vols. for 1910-12 prepared by the Entomological Research Committee (Tropical Africa) appointed by the Colonial Office; v. 4-21, pt. 1 for May 1913-30 by the Imperial Bureau of Entomology; v. 21, pt. 2-v. 38, pt. 3 for 1930-1947 by the Imperial Institute of Entomology; v. 38, pt. 4 for Feb. 1948- by the Commonwealth Institute of Entomology extracted extracted
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