References

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  2. K. Sonoda, Y. Tokuta, K. Ohashi, S. Okamoto, Y. Tanaka and R. Kitano, Report of agricultural research results in Chugoku Region, Vol. 1997, 1998, pp. 105–106 [in Japanese].
  3. T. Kunimatsu and K. Muraoka, Model Analysis of River Pollution, Gihodo Syuppan, Tokyo, 1989 [in Japanese].
  4. I. Takeda, T. Kunimatsu, S. Kobayashi and T. Maruyama, Pollutants mass balance and runoff loading of paddy field in water systems. Trans. Jap. Soc. Irrigation Drainage Rural Eng., 153 (1990) 63–72 [in Japanese].