Bibliography 1,355 History 1,067 Libraries 803 Printing 420 Library science 372 Books and reading 345 Books 339 more ... Government publications 300 Periodicals 287 Academic libraries 195 Public libraries 185 Manuscripts 173 Publishers and publishing 172 Librarians 169 Catalogs 159 Children's literature 151 Information services 130 American literature 129 Conservation and restoration 124 Book industries and trade 123 School libraries 123 Research 120 Reference books 119 Information storage and retrieval systems 118 Special collections 118 Education 117 Automation 116 Classification 115 Study and teaching 110 Sources 109 less ...