West, G. (1991). The Field Description of Engineering Soils and Rocks. Open University Press.
Citace podle Chicago (17th ed.)West, Graham. The Field Description of Engineering Soils and Rocks. Milton Keynes: Open University Press, 1991.
Citace podle MLA (9th ed.)West, Graham. The Field Description of Engineering Soils and Rocks. Open University Press, 1991.
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