Conservation et restauration Conservation and restoration 504 General 223 History 126 Historic sites 110 Lieux historiques 110 Architecture 106 SOCIAL SCIENCE 97 Cultural property 96 Historic buildings 94 Monuments historiques 90 BUSINESS & ECONOMICS 88 Historic preservation 86 Protection 83 Histoire 82 Préservation historique 69 ARCHITECTURE 65 Antiquities 63 HISTORY 63 LANGUAGE ARTS & DISCIPLINES 63 Buildings 62 Infrastructure 60 Library & Information Science 58 Antiquités 46 Collection and preservation 41 Library materials 39 Archaeology 38 Documents d'archives 38 Documents de bibliothèque 37 Collections et conservation 36