en
02 Library & information sciences
027 General libraries, archives, information centers
027.006 Organizations 027.007 Education, research, related topics 027.008 Groups of people 027.009 History and biography 027.1 Private and family libraries 027.2 Proprietary libraries 027.3 Rental libraries 027.4 Public libraries 027.5 Government libraries 027.6 Libraries for special groups and organizations 027.7 College and university libraries 027.8 School libraries
Dewey Decimal Classification
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