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Browsing Natural and Agricultural Sciences by Issue Date
Now showing items 1-20 of 14755
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(University of Pretoria, 1933)Please read the abstract in the dissertation.
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(University of Pretoria, 1950)No abstract available
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(University of Pretoria, 1952)No abstract available.
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(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. ...
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'n Ekologiese studie van die plantegroei van 'n noordelike en suidelike kloof van die Magaliesberge (University of Pretoria, 1961-06)English: The vegetation of the two kloofs in the Magaliesberg range is described. These kloofs are 10 miles west of the Hartebeespoortdam in die Brits district covering an area of approximately 35 morgen. The altitude ...
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(University of Pretoria, 1963)Please read the Summary and Conclusions(04chapter4) on pages 141-143
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(University of Pretoria, 1964)Please read the abstract in the thesis
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(University of Pretoria, 1966)No abstract available.
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(University of Pretoria, 1966)Please read the abstract in the section 00front of this document
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(University of Pretoria, 1967)Please read the abstract in the dissertation
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(University of Pretoria, 1968)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 ...
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(University of Pretoria, 1968)No abstract available
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(University of Pretoria, 1969)Please read the abstract in the thesis.
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(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 ...
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(University of Pretoria, 1970)An analysis of the social behaviour of the roan antelope (Hippotraqus equinus equinus Desmarest, 1804) is presented in this thesis. The study commenced in A herd of 10 animals in an enclosure - 1,6 kilos square and ...
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(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 ...
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The Population dynamics of Rodents at Pongola, Northern Zululand, exposed to Dieldrin coverspraying (University of Pretoria, 1972)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) ...
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(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 ...
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(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 ...
Now showing items 1-20 of 14755