@article {207,
	title = {Classical biological control of the spiny blackfly on citrus},
	journal = {Inligtingsbulletin, Instituut vir Tropiese en Subtropiese Gewasse},
	volume = {No 293},
	year = {1997},
	pages = {13-16},
	author = {Berg, M.A. van den and Greenland, J.}
}
