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Okada, Yasushi, Akihiro Nakagoshi, Masahiro Tsurukawa, Chisato Matsumura, Jiro Eiho, ja Takeshi Nakano. Environmental Risk Assessment and Concentration Trend of Atmospheric Volatile Organic Compounds in Hyogo Prefecture, Japan. Springer-Verlag, 2011.

Okada, Yasushi, et al. Environmental Risk Assessment and Concentration Trend of Atmospheric Volatile Organic Compounds in Hyogo Prefecture, Japan. Springer-Verlag, 2011.