(1974). Manual for the compilation of balances of water resources and needs. United Nations.
Citazione stile Chigago Style (17a edizione)Manual for the Compilation of Balances of Water Resources and Needs. Nueva York: United Nations, 1974.
Citatione MLA (9a ed.)Manual for the Compilation of Balances of Water Resources and Needs. United Nations, 1974.
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