Organizace spojených národů. Department of International Economic and Social Affairs. Concise report on the world population situation in 1991: with a special emphasis on age structure. New York: United Nations, 1991. vi, 33 s.
(1991). Concise report on the world population situation in 1991: With a special emphasis on age structure. New York: United Nations.
Styl ChicagoConcise Report On the World Population Situation in 1991: With a Special Emphasis On Age Structure. New York: United Nations, 1991.
Citace podle MLAConcise Report On the World Population Situation in 1991: With a Special Emphasis On Age Structure. New York: United Nations, 1991.
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