Oxidative ammonolysis of technical lignins and lignites by Tyhoda, Luvuyo

Subjects: “…Humus -- South Africa…”
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Mapping soil organic carbon stocks by combining NIR spectroscopy and stochastic vertical distribution models : a case study in the Mvoti River Catchment, KZN, South Africa by Wiese, Liesl

Subjects: “…Humus…”
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Influence of a coal derived potassium humate on the yield and nutrient content of tomato (Lycopersicum esculentum L.) under field conditions by Lecuona, Antonius Ignatius

Subjects: “…Humus -- Environmental aspects…”
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