Venables, A., & Limao, N. (1999). Infrastructure, Geographical Disadvantage, and Transport Costs. World Bank.
Lua i Stíl Chicago (17ú heag.)Venables, A., agus N. Limao. Infrastructure, Geographical Disadvantage, and Transport Costs. World Bank, 1999.
Lua MLA (9ú heag.)Venables, A., agus N. Limao. Infrastructure, Geographical Disadvantage, and Transport Costs. World Bank, 1999.
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