Ryūsan Kyōkai (Japan). Ryusan to kogyo =: Sulphuric acid and industry. Ryūsan Kyōkai.
Chicago-viite (17. p.)Ryūsan Kyōkai (Japan). Ryusan to Kogyo =: Sulphuric Acid and Industry. Tōkyō: Ryūsan Kyōkai.
MLA-viite (8. p.)Ryūsan Kyōkai (Japan). Ryusan to Kogyo =: Sulphuric Acid and Industry. Ryūsan Kyōkai.
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