4-bob.SHAXTA CHANGI VA UNGA QARSHI KURASH 4.1. Umumiy ma’lumotlar..............................................................27
4.2. Changning hosil bo‘lish sabablari.............................................27
4.3. Shaxta changining zararligi va pnevmokonioz
kasalligining profilaktikasi....................................................... 29
4.4. Havoni kompleks changsizlantirish tadbirlari........................... 30
4.5. Changdan saqlanishning individual vositalari............................ 35
4.6. Kon lahimlarining chang portlash xavfliligi............................. 37
4.7. Ko‘mir changi portlashining oldini olish va portlatishni
mahalliylashtirish tadbirlari.................................................... 39
109