1, ean UCC prefix: the product identification code provided by the international article numbering (ean UCC) system for use by the international ISBN center. The prefix currently used is 978, and the prefix 979 is reserved.
2. Group Area Code: Identifies organizations divided by country, geographical region, language and other social groups. China's group number is a number 7 set and assigned by the International ISBN Center.
3. Publisher number: identifies a specific publisher. Its length is 2-7 digits, which is set and distributed by China ISBN Center.
4. Publication serial number: identifies the publication order and is managed and distributed by the publisher. Special publications used to distinguish different contents and different product forms.
5. Check code: It is calculated by the weighted algorithm of modulus 10, which is used to check the correctness of the Chinese standard book number.
Extended data:
Precautions:
The period for staff to borrow books is generally 2 months. If you still need to use it after the expiration, you need to go through the renewal procedures, and the renewal period is 1 month. Student loan period 1 month. If it is still needed after maturity, it can be renewed for 15 days. For books with high circulation rate, the borrowing period can be shortened according to the specific situation.
Readers should carefully check the borrowed books when borrowing. If there is any stain, scratch or cut, it should be reported to the borrowing staff immediately, otherwise the user will be responsible for it.
Take good care of the borrowed books and don't fold, cross, annotate, deface or tear them. In case of the above situation, in addition to criticism and education, I should compensate for the book money or compensation.
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