Ecology 13 Economics 7 Human ecology 6 Environment 5 Cultural ecology 4 Forests and forestry 4 Indian Economics 4 Natural resources 4 Social Sciences 4 Social ecology 4 Ecology- Conservation 3 Economic development 3 GADGIL COMMITTEE REPORT; 3 History 3 Industrial economics 3 Science 3 Conservation Natural Resources 2 ECOLOGICALLY SENSITIVE ZONES; 2 Ecological History India 2 Ecology-India 2 Economic development-- Economic Planning 2 Economic growth and development-- Economic Planning 2 Economy 2 Environmental Problems 2 Environmental degradation 2 Environmentalism 2 Gadgil Report 2 Gadgil report 2 Human geography 2 Indian economy 2