Irima, W. (1981). Investigation of microhardness and reflectivity of some Papua New Guinea minerals. Dept. of Chemical Technology, PNG University of Technology.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रIrima, Wesley. Investigation of Microhardness and Reflectivity of Some Papua New Guinea Minerals. Lae: Dept. of Chemical Technology, PNG University of Technology, 1981.
एमएलए (9वां संस्करण) प्रशस्ति पत्रIrima, Wesley. Investigation of Microhardness and Reflectivity of Some Papua New Guinea Minerals. Dept. of Chemical Technology, PNG University of Technology, 1981.
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