Sökresultat - "Mineralogy Papua New Guinea."

Investigation of microhardness and reflectivity of some Papua New Guinea minerals av Irima, Wesley

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Assessment of methods for measuring available nutrients in Papua New Guinea soils II : microelements, manganese, iron, copper and zinc / av Macfarlane, Mary

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Assessment of methods for measuring available nitrogen, potassium, calcium, manganesium, zinc, copper, manganese and iron in soils or [sic] Papua [sic] New Guinea / av Macfarlane, Mary

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The weathering of soils in unsealed roads in Papua New Guinea : based on the mineralogy and electrochemistry of the process / av Kiek, Sidney Noel

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