Bureau of Indian Standards. Methods for chemical analysof steels: Part - 6 Determination of chromium by persulphate oxidation method for chromium >0.1 percent (IS : 228 (Part 6) - 1987) - New Delhi Bureau of Indian Standards 1987 ISBN: 0 Subjects--Topical Terms: Indian Standards - Metallurgy. Dewey Class. No.: 228 (Part 6) - 1987 / BUR