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Berg, M.A. van den; Greenland, J. 1997, Classical biological control of the spiny blackfly on citrus. Inligtingsbulletin, Instituut vir Tropiese en Subtropiese Gewasse No 293:13-16
Keywords: Biological control
Berg, M.A. van den; Greenland, J. 2001, Pest status of two blackfly species on citrus in South Africa and Swaziland. African Plant Protection 7(1):53-57