Dissertations Dissertations, Academic 119 Water quality 8 Environmental aspects 7 Study and teaching 6 Heavy metals 5 Islamic education 5 Study and teaching (Secondary) 5 Ecology 4 Forests and forestry 4 History 4 Islam 4 Islamic religious education 4 Plant diversity 4 Plants 4 Da'wah (Islam) 3 Economic conditions 3 Ecotourism 3 Forest management 3 Geographic information systems 3 Indigenous peoples 3 Management 3 Measurement 3 Plant communities 3 Pollution 3 Religious aspects 3 Sedimentation and deposition 3 Sediments (Geology) 3 Social aspects 3 Water 3