Conservation and restoration Conservation et restauration 504 General 242 History 212 Cultural property 164 Architecture 161 Historic sites 149 Protection 126 Historic buildings 124 Historic preservation 118 Lieux historiques 112 SOCIAL SCIENCE 107 BUSINESS & ECONOMICS 95 Histoire 91 Monuments historiques 90 Buildings 83 HISTORY 79 Antiquities 76 ARCHITECTURE 71 Préservation historique 71 Infrastructure 66 LANGUAGE ARTS & DISCIPLINES 62 Library & Information Science 57 Social aspects 47 Antiquités 46 Art 46 Archaeology 45 Buildings, structures, etc 45 Library materials 45 Collection and preservation 43