19. | The highest degree of concentration of mineral deposits are found in | |||||||
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20. | The group of minerals chemically containing hydrocarbons is | |||||||
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23. | The largest dune files are found in | |||||||
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19. | The highest degree of concentration of mineral deposits are found in | |||||||
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20. | The group of minerals chemically containing hydrocarbons is | |||||||
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23. | The largest dune files are found in | |||||||
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