Mahsulot tavsifi
Study on air, water, and soil hygiene, including methods of assessing air quality, importance of water hygiene, and practical techniques for water purification
#muvozanat#havo gigiyenasi#suv gigiyenasi
Muallif
Abdulaziz QayumovTasdiqlangan muallif
- Hujjatlari
- 30 640
- Sotilgan
- 1 218
