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Carbonaceous materials for the production of aluminium. Baked anodes. Determination of the air permeability
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Wood-chemical products. Method for determination of free resin acids
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Alumina. Methods for the determination of sodium oxide and potassium oxide
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Raremetallic concentrates. Method for the determination of sum of niobium and tantalum pentoxide
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The cylindrical shells of the steel welded vessels and apparatus. Types, main characteristics and dimensions
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