Links:
[1] http://admin.indiaenvironmentportal.org.in/content/judgement-national-green-tribunal-matter-gurdev-singh-vs-punjab-pcb-ors-regarding-industrial
[2] http://admin.indiaenvironmentportal.org.in/category/thesaurus/industrial-pollution
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/punjab
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/state-pollution-control-board-spcb-0
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ludhiana-d
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noise-pollution