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| Subject | English | German |
| environ. | housing improvement An addition, renovation or repair to a place of residence that increases its aesthetic, functional or financial value | Wohnverbesserung |
| environ. | housing improvement | Wohnverbesserung |
| econ. | improvement of housing | Verbesserung des Wohnmilieus |
| agric. | improvement of housing conditions | Verbesserung der Wohnverhältnisse |