Preston, D. A. (1974). Emigration and changes: Experience in Southern Ecuador. Dept. of Geography, University of Leeds.
Citace podle Chicago (17th ed.)Preston, David A. Emigration and Changes: Experience in Southern Ecuador. Leeds: Dept. of Geography, University of Leeds, 1974.
Citace podle MLA (8th ed.)Preston, David A. Emigration and Changes: Experience in Southern Ecuador. Dept. of Geography, University of Leeds, 1974.
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