Links:
[1] http://admin.indiaenvironmentportal.org.in/news/govt-may-wait-subsidy-formula-ongc-offer
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/indian-express-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/petrochemical-industry
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/oil-and-natural-gas-corporation-ongc
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bharat-heavy-electricals-ltd-bhel