A new Portland State University study shows that even though water quality has improved in South Korea's Han River basin since the 1990s, there are still higher-than-acceptable levels of pollut
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/psu-study-finds-room-improvement-south-koreas-polluted-river-basin
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/environment-news-network
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/river-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/south-korea
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/water-pollution-control
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/freshwater-ecosystems