Protection Tariff 51 Free trade and protection 42 Protectionism 23 Free trade 21 Cultural property 19 History 9 more ... Museums 8 Commercial policy 7 Conservation and restoration 5 Economic conditions 4 Antiquities 3 Art thefts 3 Collection and preservation 3 Economics 3 Libraries 3 Politics and government 3 Acquisitions 2 Art and state 2 Art objects 2 Art treasures in war 2 Collectors and collecting 2 Confiscations and contributions 2 Cultural policy 2 Culture and law 2 Currency question 2 Destruction and pillage 2 Histoire 2 Historic buildings 2 Intellectual property 2 International cooperation 2 Konststölder 2 Law and legislation 2 Material culture 2 Monuments 2 Museum techniques 2 Political history 2 Security measures 2 Social life and customs 2 Societies, etc 2 less ...