Links:
[1] http://admin.indiaenvironmentportal.org.in/reports-documents/letter-pollution-control-dated-19042010
[2] http://admin.indiaenvironmentportal.org.in/category/publisher/chhattisgarh-environment-conservation-board
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chhattisgarh
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/durg-d
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pollution-control
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bhilai