(1991). Resources, enviroment, and population: Present knowledge, future options. The Population Council.
Citace podle Chicago (17th ed.)Resources, Enviroment, and Population: Present Knowledge, Future Options. Nueva York: The Population Council, 1991.
Citace podle MLA (9th ed.)Resources, Enviroment, and Population: Present Knowledge, Future Options. The Population Council, 1991.
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