Clawson, M. (1968). The land system of the United States: An introduction to the history and practice of land use and land tenure. University of Nebraska Press.
Citace podle Chicago (17th ed.)Clawson, Marion. The Land System of the United States: An Introduction to the History and Practice of Land Use and Land Tenure. Lincoln: University of Nebraska Press, 1968.
Citace podle MLA (8th ed.)Clawson, Marion. The Land System of the United States: An Introduction to the History and Practice of Land Use and Land Tenure. University of Nebraska Press, 1968.
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