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[文献書誌] Katayama, A., Funasaka, K., Fujie, K.: "Changes in the respiratory quinone profile of a soil treated with pesticides"Biol. Fertil. Soils. 33. 454-459 (2001)
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[文献書誌] Maie, N., Watanabe, A., Kimura, M.: "Origin and properties of humus in the subsoil of irrigated rice paddies. IV. Effect of water percolation on the binding type of humus in a submerged plow layer soil"Soil Sci. Plant Nutr.. 47. 1-8 (2001)
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[文献書誌] Watanabe, A., Sarno, Rumbanraja, J., Tsutsuki, K, Kimura, M.: "Humus composition of soils under forest, coffee, and arable cultivation in hilley areas of south Sumatra, Indonesia"European J. Soil Sci. 52. 599-606 (2001)
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[文献書誌] Maie, N., Watanabe, A., Hayamizu, K., Kimura, M.: "Comparison of chemical characteristics of Type A humic acids extracted from subsoils of paddy fields and surface ando soils"Geoderma. 106. 1-19 (2001)