Stuggling to contain stubble-burning, Punjab features among the top four states with maximum cities that have failed to meet the national air quality standards in India.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/punjab-among-top-4-states-failing-air-quality-standards
[2] http://admin.indiaenvironmentportal.org.in/category/author/aman-sood
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/tribune-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/punjab
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-standards
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/state-pollution-control-board-spcb-0
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/crops
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/agriculture
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/respiratory-diseases