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Method of manufacture of sulfuric acid anhydrous and of sulphuric acid, by means of gypsum or other alkali and alkaline-earth - metal sulphates, natural or artificial, with simultaneous production of the glass
Method of manufacture of sulfuric acid anhydrous and of sulphuric acid, by means of gypsum or other alkali and alkaline-earth - metal sulphates, natural or artificial, with simultaneous production of the glass
