An American scientist and his French counterpart combine to make concrete durable
Twenty billion tonnes of concrete is produced in a year. It
Links:
[1] http://admin.indiaenvironmentportal.org.in/opinion/concrete-facelift
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/habitat-and-urbanisation
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/building-materials
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/research
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/france
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/united-states-america-us