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E. van Wyk

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The Determination of Platinum, Palladium, Rhodium, and Gold in Ores and Concentrates by the Fusion Technique with Lead as the Collector
The Effects of Various Matrix Elements on the Efficiency of the Fire-assay Procedure Using Nickel Sulphide as the Collector
An Examination of Fire-assay Techniques as Applied to Chromite-bearing Materials
8 in EEN Senior Sertifikaat Eksamenvraestelle en Memorandums Biologie, Natuur-en Skeikunde, Wiskunde en Rekeningkunde (SG en HG) 2002 (2001 Jaar)
8 in ONE Senior Certificate Examination Papers and Memorandi Biology, Physical Science, Mathematics and Accounting (SG and HG) 2003 (2002 Year)
8 in ONE Senior Certificate Examination Papers and Memorandi Biology, Physical Science, Mathematics and Accounting (SG and HG) 2002 (2001 Year)
8 in EEN Senior Sertifikaat Eksamenvraestelle en Memorandums Biologie, Natuur-en Skeikunde, Wiskunde en Rekeningkunde (SG en HG) 2003 (2002 Jaar)
SANBI Herbaria A Decade of Foundational Botanical Excellence and Collections Management (2004-2014)