025 Operations of libraries, archives, information centers
025.5 Services for users
025.5019 Library services--psychological aspects 025.50285 Public services--libraries--computer applications 025.5092 Library users 025.52 Reference and information services 025.54 Reader advisory services to individuals and groups 025.56 Orientation and bibliographic instruction for users 025.58 Library use studies
Dewey Decimal Classification
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