many activities require a specific order of performance
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/participatory-approach
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/down-earth
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/medical-research
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/mental-health
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/life-science
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/neurology