Marktplatz - Deutsch In Der Wirtschaft | Learning German | Deutsche Welle
Marktplatz: Chapter 20
- Author: Vários
- Narrator: Vários
- Publisher: Podcast
- Duration: 0:14:49
- More information
Informações:
Synopsis
Getting Rid of Sewage Polluntants, sewage treatment plants, sewage removal: How water can be saved and kept clean. Topics: Sewage, environmental protection
