Thornton, J. (1917). Elementary physiography: An introduction to the study of nature. Longmans, green & co.
Chicago Style aipamenaThornton, John. Elementary Physiography: An Introduction to the Study of Nature. London: Longmans, green & co, 1917.
MLA aipamenaThornton, John. Elementary Physiography: An Introduction to the Study of Nature. Longmans, green & co, 1917.
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