tayyorish

Mahsulot tavsifi

Analyzing the safety requirements of ventilation in mysterious mines with high risks in the mining sectors

#xavfsizlik talablar#portlash xavfi#maviud shaxtalar

Muallif

Sanobar Axmedova
Sanobar AxmedovaTasdiqlangan muallif
Hujjatlari
388
Sotilgan
66

O'xshash hujjatlar