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Environmental education Sustainable development 62 Study and teaching 32 Environmental aspects 14 Economic development 6 Climatic changes 5 Early childhood education 5 Education 5 Environmental responsibility 5 Industrial management 5 Economic aspects 4 Environmental sciences 4 Study and teaching (Higher) 4 Aims and objectives 3 Critical thinking 3 Decision making 3 Education, Higher 3 Human ecology 3 Natural resources 3 Pollution 3 Population 3 Simulation methods 3 Social sciences 3 Sustainable architecture 3 System analysis 3 Cross-cultural studies 2 Environmental ethics 2 Environmental management 2 Social aspects 2 Sustainability 2