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| gypsum A colourless or white mineral used in the building industry and in the manufacture of cement, rubber, paper and plaster of Paris | |||
| igeltsu: 1 phrase in 1 subject |
| Environment | 1 |
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| gypsum A colourless or white mineral used in the building industry and in the manufacture of cement, rubber, paper and plaster of Paris | |||
| igeltsu: 1 phrase in 1 subject |
| Environment | 1 |