Libraries 17 Library science 15 Information services 11 Congresses 10 Information science 10 Academic libraries 9 Automation 7 Library cooperation 7 Bibliography 6 Library education 6 Data processing 5 Information storage and retrieval systems 5 Library administration 5 Library information networks 5 Programmed instruction 5 Research libraries 5 Library schools 4 Research 4 Special collections 4 Administration 3 Audio-visual library service 3 Classification, Dewey decimal 3 Fair use (Copyright) 3 Government publications 3 Library finance 3 Periodicals 3 Photocopying 3 Social sciences 3 Abstracting and indexing services 2 Book selection 2