Mahsulot tavsifi
This course covers the understanding and classification of local and centralized water supply systems, water sources and their hygienic properties, and the basic components and functions of water supply systems
#health#hygiene#water supply
Muallif
Oson TalabaTasdiqlangan muallif
- Hujjatlari
- 43 458
- Sotilgan
- 1 691
