Water resources development 189 History 152 Water-supply 103 Territorial waters 96 Inland water transportation 79 Foreign relations 72 Water 59 more ... Water conservation 42 Pollution 37 Eau 36 Environmental aspects 36 International status 36 Irrigation 36 Boundaries 34 Strategic aspects 34 Diplomatic relations 32 Hydraulic engineering 32 Management 32 Exploitation 31 Ressources en eau 31 Government policy 27 Grain 27 Transportation 27 Law of the sea 24 Approvisionnement 23 Eaux territoriales 21 International relations 21 Relations extérieures 21 Political aspects 20 Sea-power 20 less ...