23.1 |
Manufacture of glass and glass products |
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23.2 |
Manufacture of refractory products |
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23.3 |
Manufacture of clay building materials |
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23.5 |
Manufacture of cement, lime and plaster |
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23.7 |
Cutting, shaping and finishing of stone |
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23.4 |
Manufacture of other porcelain and ceramic products |
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23.6 |
Manufacture of articles of concrete, cement and plaster |
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23.9 |
Manufacture of abrasive products and non-metallic mineral products n.e.c. |
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