View documents (IIIF viewer) (4 documents / 4 available on the web) View documents (DFG viewer)
| Country/geo | German East Africa |
| Subject | Drinking water supply, sewerage |
| superordinated | Medical services, hygiene, medical institutions |
| URI | https://pm20.zbw.eu/folder/sh/141471,163695 |
| ID | sh/141471,163695 |