World Bank. (1984). World tables. The Johns Hopkins Univ. Pr. for the World Bank.
Tohutoru Kātū Chicago (17th ed.)World Bank. World Tables. Baltimore: The Johns Hopkins Univ. Pr. for the World Bank, 1984.
Tohutoro MLA (9th ed.)World Bank. World Tables. The Johns Hopkins Univ. Pr. for the World Bank, 1984.
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