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17:46
Цемент
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12 years ago
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17:19
Фосфор
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12 years ago
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19:48
Углерод
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12 years ago
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4:42
Стекло
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12 years ago
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19:31
Сера
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10:06
Сера в природе
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4:34
Производство цемента
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18:08
Получение Азота, Амм...
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12 years ago
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10:11
Окись углерода
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12 years ago
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18:58
Кремний
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4:14
Керамика
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12 years ago
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19:11
Известь, её производ...
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12 years ago
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9:52
Двуокись углерода
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12 years ago
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17:41
Воздух
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12 years ago
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18:48
Водород
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12 years ago
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16:36
Вода
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12 years ago
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18:28
Аллотропные формы уг...
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12 years ago
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