Warntz, W. (1964). Geography now and then : some notes on: The history of academic geography in the. American Geographical society.
Citace podle Chicago (17th ed.)Warntz, William. Geography Now and Then : Some Notes on: The History of Academic Geography in the. New York: American Geographical society, 1964.
Citace podle MLA (9th ed.)Warntz, William. Geography Now and Then : Some Notes on: The History of Academic Geography in the. American Geographical society, 1964.
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