Não informado. (2022). Publications of the International Tin Research and Development. International Tin Research and Development.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Publications of the International Tin Research and Development. London: International Tin Research and Development, 2022.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Publications of the International Tin Research and Development. International Tin Research and Development, 2022.
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