International cooperation Air -- 1 Balance of trade 1 Climatology 1 Climatology -- 1 Commercial policy 1 Delivery of health care -- 1 more ... Economic assistance 1 Economic development -- 1 Environmental aspects 1 Environmental law 1 Environmental policy -- 1 Health policy -- 1 Health status 1 International economic relations 1 Law and legislation 1 Management 1 Natural resources -- 1 Pollution -- 1 Public health -- 1 Public welfare -- 1 Socioeconomic factors 1 Sustainable development 1 Trends 1 World health 1 less ...