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GB349823A
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Process for working up sylvinitic crude salts to a mixture of potassium nitrate and sodium nitrate or this mixture and soda
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GB359450A
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Process for working up crude phosphate and potassium salts to mixed fertiliser
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GB343691A
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An improved process for the production of potassium sulphate and soda
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GB333797A
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Improvements in and relating to processes for the decomposition of crude phosphate
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GB329939A
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Improvements in and relating to the production of potassium nitrate with simultaneous obtaining of dimagnesium phosphate
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GB346734A
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Improvements in and relating to the production of potassium nitrate with simultaneous obtaining of dimagnesium phosphate
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