CHANGE OF WATER LEVEL AND ELECTRIC CONDUCTIVITY USING MONITORING DATA AT COMBINED SEWER PIPES IN TSURUMI RIVER BASIN 論文 Sung-Ae Lee・Yoshihiro Shibuo・Hiroaki Furumai ·2019-01-01 ·『Journal of Japan Society of Civil Engineers Ser G (Environmental Research)』 75(2) pp. 55-64 doi:10.2208/jscejer.75.55