1.ISBN (International Standard Book Number): It is a numeric code of 13, which is used to identify books. Each book has a unique ISBN, through which you can query the basic information and inventory of books.

2. Barcode: The library uses the bar code system to identify and manage books. Barcodes are usually associated with ISBN numbers, which are used for library borrowing, returning books and collection management.

3.RFID (Radio Frequency Identification): This is a wireless communication technology, which can put labels on books and identify the information stored in the labels through readers. The library can use RFID system to realize automatic borrowing and returning books, inventory management, anti-theft and other functions.

4. Collection number: Each book has a unique collection number in the library, which is used to locate and manage the books in the library.

These numbering systems play an important role in library automation and can improve the operation efficiency and management level of the library.