Links:
[1] http://admin.indiaenvironmentportal.org.in/news/sulabh-wins-united-nations-renewable-energy-award
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/business-standard-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/renewable-energy
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/biogas
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/un
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/sulabh-international
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/awards
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/india