International Federation of Petroleum and Chemical Workers. World Congress. (1963). Proceedings of the ... World Congress, International Federation of Petroleum Workers. The Federation.
Citace podle Chicago (17th ed.)International Federation of Petroleum and Chemical Workers. World Congress. Proceedings of the ... World Congress, International Federation of Petroleum Workers. [S.l.]: The Federation, 1963.
Citace podle MLA (8th ed.)International Federation of Petroleum and Chemical Workers. World Congress. Proceedings of the ... World Congress, International Federation of Petroleum Workers. The Federation, 1963.
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