> Mehrbändiges Werk
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2:
Dictionary of the gas industry 2 International Gas Union
Essen: Vulkan-Verl., 1985
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[1]:
Dictionary of the gas industry [1] International Gas Union
Essen: Vulkan-Verl., 1982
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3:
Dictionary of the gas industry 3 International Gas Union
Essen [u.a.]: Vulkan-Verl. [u.a.], 1982