Banning old diesel vehicles may not be enough to address severe air pollution in Delhi.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/ban-old-diesel-vehicles-may-not-be-enough-clean-delhi-air
[2] http://admin.indiaenvironmentportal.org.in/category/author/jayashree-nandi
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/diesel
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicular-pollution
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/centre-science-and-environment-cse
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nitrogen-dioxide
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environment-pollution-control-authority-epca
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/vehicle-technology-and-fuel