10. Fosfogipsning tarkibi, tuzilishi va xossalarini fizik-kim yoviy tatqiq
e t is h ............................................................................................................................... 45
11. Fosfogipsdan xalq xo'jaligining turli sohalarida foydalanish
im koniyatlari............................................................................................................... 54
12. Fosfogipsdan havoda qotadigan materiallar o l i s h .......................................... 56
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