STEAM BOILERS ACCORDING TO DESIGN (STEAM ENGINES)
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BTSTEAM BOILERS, STEAM GENERATORS, STEAM PLANTS (STEAM ENGINES)
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UDC621.181
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Descriptor GERDAMPFKESSELBAUARTEN (DAMPFKRAFTANLAGEN)
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Descriptor ENGSTEAM BOILERS ACCORDING TO DESIGN (STEAM ENGINES)
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Descriptor FRECHAUDIÈRES À VAPEUR SELON LA CONCEPTION (MACHINES À VAPEUR)