1. 2) Meyers, P. A., Takemura, K. and Horie, S. (1993) Reinterpretation of late quaternary sediment chronology of Lake Biwa, Japan, from correlation with marine glacial-interglacial cycles, Quaternary Research, 39, 154-162.
2. 3) Clesceri, L. S., Greenberg, A. E. and Eaton, A. D. (1998) Standard Methode for the Examination of Water and Wastewater 20th edn. Biochemical Oxygen Demand (BOD), American Public Health Association /American Water Works Association/Water Environment Federation, Washington, DC, USA.
3. 4) Japanese Industrial Standard (1998) JIS K 0102 Testing method for industrial wastewater Japanese Standards Association, pp.42-44, Tokyo, Japan.