Tank, R. W. (1973). Focus on environmental geology: A collection of readings (3rd ed.). Oxford University Press.
Citace podle Chicago (17th ed.)Tank, Ronald W. Focus on Environmental Geology: A Collection of Readings. 3rd ed. New York: Oxford University Press, 1973.
Citace podle MLA (9th ed.)Tank, Ronald W. Focus on Environmental Geology: A Collection of Readings. 3rd ed. Oxford University Press, 1973.
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