Mahsulot tavsifi
This course discusses the importance of local and centralized water supply, as well as the hygiene requirements for drinking water
#suv ta'minoti#gigiyenik talablar#mahalliy suv ta'minoti
Muallif
Bobur AllayorovTasdiqlangan muallif
- Hujjatlari
- 56 898
- Sotilgan
- 3 781
