Briggs, P. (1969). Mysteries of our world: Unanswered questions about the continents, the seas, the atmosphere, the origins of life. McKay.
Citace podle Chicago (17th ed.)Briggs, Peter. Mysteries of Our World: Unanswered Questions About the Continents, the Seas, the Atmosphere, the Origins of Life. New York: McKay, 1969.
Citace podle MLA (8th ed.)Briggs, Peter. Mysteries of Our World: Unanswered Questions About the Continents, the Seas, the Atmosphere, the Origins of Life. McKay, 1969.
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