Library science 559 Library Science 447 LIBRARY SCIENCE 134 library science 127 Library classification schemes 63 Information science 57 Information technology 36 Libraries 35 Digital libraries 24 Information services 22 English;Library Science 18 Library management 18 Library education 17 Digital Libraries 16 Automation 15 Cataloging 15 Classification 15 Information Science 15 Library & information sciences 15 LIbrary automation 13 Research 13 Digital Library 12 Academic libraries 11 Cataloguing 11 Library and Information Science 11 Library automation 11 Library Automation 10 Indexing 9 Information Technology 9 Library and information science 9