History 167 Academic libraries 110 Libraries 93 Bibliography 72 Information storage and retrieval systems 65 Public libraries 40 Librarians 36 more ... School libraries 36 Books 35 Library science 35 Printing 35 Library education 33 Library use studies 31 Books and reading 30 Study and teaching 30 Administration 29 Information services 25 Publishers and publishing 24 Subject headings 24 Information science 23 Evaluation 22 Library administration 21 Indexing 20 Reference services (Libraries) 20 Research 20 Cataloging 18 School librarians 18 Instructional materials centers 16 Censorship 15 Education 15 less ...