Entomologica Americana - Brooklyn Entomological Society (New York Entomological Society [etc.], 1974)

Entomologica Americana - Brooklyn Entomological Society (New York Entomological Society [etc.], 1974)

Flora of Southern Africa : the Republic of South Africa, Basutoland, Swaziland and South West Africa - Codd, L. E. W. (Govt. Printer, 1985)

A plant ecology survey of the Tugela river basin, Natal - Edwards, Denzil (1967)

A plant ecology survey of the Tugela river basin, Natal - Edwards, Denzil (1967)