1. The Manufacture of Sulfuric Acid;Duecker,1959
2. Sulfuric Acid Manufacture and Effluent Control;Sittig,1971
3. Fertilizer Sulfur and Food Production;Kanwar,1986
4. Potential Production and Marketing of FGD (Flue Gas Desulfurization) By-product Sulfur and Sulfuric Acid in the U.S.;O’Brien,1979
5. Sulphur: New Sources and Uses,1983