0 Computer science, information & general works
02 Library & information sciences
020 Library and information sciences 021 Relationships of libraries, archives, information centers 022 Administration of physical plant 023 Personnel management (Human resource management) 025 Operations of libraries, archives, information centers 026 Libraries, archives, information centers devoted to specific subjects 027 General libraries, archives, information centers 028 Reading and use of other information media
Dewey Decimal Classification
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