Topic
Nature / Ecology
4
bisacsh:NAT010000
Business & Economics / Development / Sustainable Development
2
Political Science / Public Policy / Environmental Policy
2
bisacsh:BUS072000
2
bisacsh:POL044000
2
Political Science / Security (national & International)
1
Science / Earth Sciences / Hydrology
1
Social Science / Human Geography
1
bisacsh:POL012000
1
bisacsh:SCI081000
1
bisacsh:SOC015000
1