Buildings 517 Building 495 Historic buildings 294 Architecture 192 Buildings, structures, etc 191 Building materials 165 Congresses 158 Conservation and restoration 135 History 108 Specifications 108 Building, Iron and steel 99 Construction industry 91 Design and construction 90 School buildings 89 Building laws 76 Periodicals 74 Estimates 73 Environmental engineering 71 Bibliography 67 Energy conservation 60 Research 58 Standards 56 City planning 49 Earthquake effects 48 Historic sites 46 Architecture, Domestic 44 Church buildings 44 Handbooks, manuals, etc 43 Planning 43 Public buildings 40