Reference services (Libraries) Electronic reference services (Libraries) 11 Reference books 8 Internet in library reference services 6 Interviewing 6 Customer services 4 Electronic reference sources 4 Information resources 4 Information technology 4 Libraries 4 Reference librarians 4 Study and teaching 4 Effect of technological innovations on 3 Information services 3 Academic libraries 2 Information retrieval 2 Libraries and readers 2 Library administration 2 Library science 2 Reference services 2 Technological innovations 2 Bibliography 1 Fee-based library services 1 Fees 1 Library circulation and loans 1 Library technicians 1 Professional relationships 1 Public services (Libraries) 1 Teams in the workplace 1 Training of 1