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Citace podle Chicago (17th ed.)World Gas Conference Nice, France, a International Gas Union. 12e Congrès Mondial Du Gaz, Nice 73: [rapports] = 12th World Gas Conference, Nice 73 : [reports]. London: International Gas Union, 1973.
Citace podle MLA (8th ed.)World Gas Conference Nice, France, a International Gas Union. 12e Congrès Mondial Du Gaz, Nice 73: [rapports] = 12th World Gas Conference, Nice 73 : [reports]. International Gas Union, 1973.
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