2. Search for books on the multimedia display screen in the lobby on the second floor of the library of Northwest University for Nationalities;

3. Search for books in the "Collection-Book Search" option of WeChat official account of Northwest University for Nationalities Library.

Call number: also known as call number, it is the code used by library book shelving, and it is the main basis for literature borrowing and collection inventory. Generally, it consists of several groups of numbers arranged in branches, which are often printed on the book label below the spine, on the title page or above the back cover of the book.