National Institute of Environmental Research - Yeongsan River Environment Research Center, National Institute of Environmental Research - Yeongsan River Environment Research Center, National Institute of Environmental Research - Yeongsan River Environment Research Center, National Institute of Environmental Research - Yeongsan River Environment Research Center, National Institute of Environmental Research - Environmental Measurement & Analysis Center, National Institute of Environmental Research - Yeongsan River Environment Research Center, National Institute of Environmental Research - Yeongsan River Environment Research Center, National Institute of Environmental Research - Yeongsan River Environment Research Center and National Institute of Environmental Research