Merkoša sitáhtat
APA-čujuhus (7. p.)
Uekötter, F., & Engels, J. I. (2010). The turning points of environmental history. University of Pittsburgh Press.
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Chicago-čujuhus (17. p.)
Uekötter, Frank, juo Jens Ivo Engels. The Turning Points of Environmental History. Pittsburgh, Pennsylvania: University of Pittsburgh Press, 2010.
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MLA-čujuhus (9. p.)
Uekötter, Frank, juo Jens Ivo Engels. The Turning Points of Environmental History. University of Pittsburgh Press, 2010.
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