Dorsey. Theodore Roosevelt, Conservation, and the 1908 Governors' Conference. Texas A&M University Press.
Citace podle Chicago (17th ed.)Dorsey. Theodore Roosevelt, Conservation, and the 1908 Governors' Conference. Texas A&M University Press.
Citace podle MLA (9th ed.)Dorsey. Theodore Roosevelt, Conservation, and the 1908 Governors' Conference. Texas A&M University Press.
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