Fern, A. G., & Nau, B. S. (1976). Seals. Oxford University Press for the Design Council, the British Standards Institution and the Council of Engineering Institutions.
Citace podle Chicago (17th ed.)Fern, A. G., a B. S. Nau. Seals. [Oxford]: Oxford University Press for the Design Council, the British Standards Institution and the Council of Engineering Institutions, 1976.
Citace podle MLA (8th ed.)Fern, A. G., a B. S. Nau. Seals. Oxford University Press for the Design Council, the British Standards Institution and the Council of Engineering Institutions, 1976.
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