Mahsulot tavsifi
A detailed study on the importance of water in human life, various water supply issues, quality standards, local water supply systems, and the improvement methods of water quality. Includes information on the global access to improved drinking-water sources
#water#hygiene#health factor
Muallif

Maxmudjon FattayevTasdiqlangan muallif
- Hujjatlari
- 13 024
- Sotilgan
- 194









