Geographic information systems 115 Geography 80 Remote sensing 48 Journal of geophysical research 31 Geographical distribution 26 History 22 Geographical information systems 21 GIS 19 Geographical perception 15 Human geography 12 Geographic information system 11 Human ecology 11 Natural disasters 11 Spatial analysis (Statistics) 11 Taxonomy 11 Data processing 10 India 10 Pure sciences - Historical & geographical treatment 10 TECHNOLOGY & ENGINEERING / Remote Sensing & Geographic Information Systems 10 Biological Resources (Plant) 9 Geographic Information Systems 9 Horticultural Crops, (New March 2000) 9 Taxonomy and Evolution 9 Viral, Bacterial and Fungal Diseases of Plants, (New March 2000) 9 Ecology 8 Economics 8 Emergency management 8 GEOGRAPHICAL INFORMATION SYSTEM 8 Globalization 8 Hazardous geographic environments 8