Libraries 421 Academic libraries 226 Bibliography 167 History 150 Automation 145 Library science 124 Public libraries 112 more ... Administration 109 Books 107 School libraries 96 Data processing 76 Information storage and retrieval systems 75 Information services 69 Periodicals 68 Conservation and restoration 64 Librarians 62 Classification 61 Library surveys 61 Research libraries 59 Special collections 59 Cataloging 57 Printing 57 Library information networks 56 Standards 56 Library administration 55 Library cooperation 53 Books and reading 52 Handbooks, manuals, etc 50 Library materials 50 Activity programs 49 less ...