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Bacteriocinogeny in Proteus vulgaris
(University of Pretoria, 1967)
One hundred and eighteen different strains of Proteus vulgaris were investigated for bacteriocinogeny. These P. vulgaris strains were also used a s indicators. Seventy of the 118 strains produced zones of inhibition when ...
A taxonomical–ecological investigation of the soil mesofauna in the rhizosphere of citrus trees at Zebediela Estates
(Potchefstroom University for Christian Higher Education, 1968)
The purpose of this investigation was to assess the taxanomic - ecologic nature of Zebediela's citrus sol, situated in the eastern part of the Potgietersrus district, Northern Transvaal . Habitat descriptions are given, ...
Prestasiestandaarde in swem vir seuns en dogters van 14-17 jaar op die middelbare skool
(North-West University (South Africa), 1963)
"Abstract not copied"
'n Vergelykende studie van temperatuur as 'n ekologiese faktor by die varswaterslakspesies Lymnaea natalensis Krauss en Bulinus [Bulinus] tropicus [Krauss] Mollusca basommatophora
(North-West University (South Africa), 1966)
"Abstract not copied"
Population studies on the mesofauna of compost, with special reference to the parasitoid mesostigmata [Acari]
(North-West University (South Africa), 1967)
"Abstract not copied"
'n Vergelykende studie van die invloed van enkele ekologiese faktore op die varswaterslakspesies, Lymnaea natalensis Krauss en Bulinus (Bulinus) tropicus (Krauss) [Mollusca : Basommatophora] met spesiale klem op die substratum
(North-West University (South Africa), 1968)
"Abstract not copied"
'n Kwantitatiewe en kwalitatiewe ondersoek van die bentos in Barberspan
(North-West University (South Africa), 1967)
"Abstract not copied"
Taxonomic studies on some nematodes of the superfamily Dorylaimoidea from South Africa
(North-West University (South Africa), 1964)
"Abstract not copied"
Some aspects of the morphology of Lymnaea natalensis Krauss (Mollusca : Basommatophora)
(North-West University (South Africa), 1963)
"Abstract not copied"
A taxonomic study of the family Phytoseiidae [acari] in South Africa with contributions to the biology of two species
(North-West University (South Africa), 1966)
"Abstract not copied"