Winter, Hendrik De la Rey(University of Pretoria, 1957)
This treatise provides a record of the stratigraphy and structure in the southernmost extension of the Witwatersrand System and is based on the results obtained from bore-hole cores and from detailed mapping underground. ...
During the refining of steel by basic processes, a multitude of mineralogical
reactions take place in the refractories with which the furnace
is lined. The reactions are caused by an influx of material from
the slag and ...
Brodrick, Harold Thomas(University of Pretoria, 1969)
Citrus black spot caused by Guignardia Citricarpa Kiely, is the most serious fungal disease affecting citrus in the Republic of South Africa. The disease is also reported from Swaziland, Rhodesia and Mozambique and in ...
Von Gruenewaldt, G. (Gerhard), 1942-(University of Pretoria, 1971)
This study comprises a petrographical and mineralogical investigation of
rocks from an area 850 sq. km in size, situated about 80km northeast of Middelburg.
Roughly half of the area is occupied by rocks of the epicrustal ...
Four grids, each 3,42 ha (4 morgen) in size, were live
trapped from April 1967 through May 1969 in two soil and vegetation
types (black turf~ Acacia nigrescens community, and
brown reddish soil: Acacia tortilis community) ...
Davis, Richard Marcy(University of Pretoria, 1973)
The ecology and life history of the vlei rat, Otomys irroratus
(Brants, 1827), were studied in a population on the Van Riebeeck
Nature Reserve near Pretoria. Two main procedures were used to collect
the basic information ...
Grobler, Johannes Hendrik(University of Pretoria, 1973)
The study set out to determine some of the bioecological relationships of the sable antelope Hippotragus niger niger (Harris, 1838) in the Rhodes Matopos National Park, Rhodesia. The vegetation of the area is divided into ...
This study was carried out in the eastern Transvaal Lowveld in an area
with a giraffe population density of 2,6 per km . Lions are the only predators
and it was estimated that 48% of the calves die in their first
Bredell, Johannes H.(University of Pretoria, 1976)
Nunataks within an area of approximately 3 400 km2 between latitudes
71°50' and 72°35' south and longitudes 1°30' and 4°00' west were mapped
geologically by the 12th South African National Antarctic Expedition during ...
This investigation has been carried out in three nature
reserves in the Transvaal, the Kruger National Park and
in two game reserves in Natal. Specimens for trace
element analysis were collected also from Natal and ...
Die doel van hierdie verhandeling is om 'n algoritme vir
kleinstekwadrate-benaderings te vind en om met behulp van die algoritme
'n rekenaarprogram te ontwikkel vir die minimering van die kleinstekwadrate-