The Phosphates Of America. Where And How They Occur; How They Are Mined; And What They Cost. With Practical Treatises On The Manufacture Of Sulphuric Acid, Acid Phosphate, Phosphoric Acid, And Concentrated Superphosphates
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The Phosphates Of America. Where And How They Occur; How They Are Mined; And What They Cost. With Practical Treatises On The Manufacture Of Sulphuric Acid, Acid Phosphate, Phosphoric Acid, And Concentrated Superphosphates
