Não informado. (1959). GATT Activities. General Agreement on Tariffs and Trade.
Lua i Stíl Chicago (17ú heag.)Não informado. GATT Activities. Geneva, Suíça: General Agreement on Tariffs and Trade, 1959.
Lua MLA (8ú heag.)Não informado. GATT Activities. General Agreement on Tariffs and Trade, 1959.
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