Tarasov, A.V. Production of sulfur from metallurgical off-gases of autogenous processes - Lima Colegio de Ingenieros del Perú 1999 - pp. 225-231 ilus., tbls. Subjects--Topical Terms: ACIDO SULFURICOAZUFRECATALISISGAS NATURALMETANOREDUCCION Universal Decimal Class. No.: P/061.3:622+502.55/C74|62