Books on library science are located in the Z call number range. Some examples include:
Z665-718.8 Library science. Information science
Z668-669.7 Library education. Research
Z674.7-674.83 Library information networks
Z678-678.88 Library administration and organization
Z678.89-678.892 Library service agencies
Z678.9-Z678.93 Automation
Z679-680 Library buildings. Library architecture
Z680.3-680.6 Library communication systems
Z684-685 Supplies. Shelving. Bookstacks
Z686 Branches. Delivery stations. Bookmobiles
Z687-718.85 The collections. The books
Z688 Special collections
Z688.5-Z688.6 Processing
Z689-689.8 Acquisition (selection, purchase, gifts, duplicates)
Z693-695.83 Cataloging
Z695.9-695.94 Indexing. Abstracting
Z696-697 Classification and notation
Z699-699.5 Machine methods of information and retrieval
Z702 Thefts and losses of books and other library materials
Z703.5 Stack management. Disposition of books on shelves, etc.
Z703.6 Discarding. Weeding
Z711-711.95 Public services. Reference services
Z712-714 Circulation. Loans. Charging systems
Z716.2-718.85 Libraries in relation to special topics
Z719-723 Libraries (General)
Z1003-1003.5 Choice of books. Books and reading. Book reviews
ZA3038-5190 Information resources (General)