REFERENCES
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- Dade, H. A. (1949) The laboratory diagnosis of honey-bee diseases Monogr. Quekett micr. CI. No. 4
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- Smith, F. G. (1958) Beekeeping observations in Tanganyika 1949–57 Bee World 39(2): 29–36
- Sturtevant, A. P. (1947) Diseases and enemies of the honey bee pages 600–608 in The hive and the honey bee, ed. Grout, R. A.