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Our knowledge of Early Jurassic palaeobiodiversity in the flex 4 heartworm test upper Elliot Formation of South Africa has increased markedly in recent years with the discovery of new fossils, re-assessments of previously collected material and a better understanding of Stormberg Group stratigraphy.Here, Ngwevu intloko, a new genus of upper Elliot
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The contents of soap and organic acid in emulsion polymerized styrene-butadiene rubber here determined by indicator titration and potentiometric titration in ISO 7781 were compared.The differences between the determination principles and results of the two methods were compared, and the accuracy of the results was investigated by standard addition