Bennett, J. D., & Laughton, C. A. (1971). Annotated bibliography and index of the geology of Botswana, 1967-1970. Geological Survey and Mines Dept..
Citace podle Chicago (17th ed.)Bennett, J. D., a C. A. Laughton. Annotated Bibliography and Index of the Geology of Botswana, 1967-1970. [Lobatse, Botswana]: Geological Survey and Mines Dept., 1971.
Citace podle MLA (8th ed.)Bennett, J. D., a C. A. Laughton. Annotated Bibliography and Index of the Geology of Botswana, 1967-1970. Geological Survey and Mines Dept., 1971.
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