Smil, V. (1997). Cycles of life: Civilization and the biosphere. New York: Scientific American Library.
Παραπομπή Chicago StyleSmil, Vaclav. Cycles of Life: Civilization and the Biosphere. New York: Scientific American Library, 1997.
Παραπομπή MLASmil, Vaclav. Cycles of Life: Civilization and the Biosphere. New York: Scientific American Library, 1997.
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