Não informado. (2004). Emerging Technology Series. United Nations, Industrial Development Organization.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रNão informado. Emerging Technology Series. Vienna: United Nations, Industrial Development Organization, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रNão informado. Emerging Technology Series. United Nations, Industrial Development Organization, 2004.
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