1. View through the copyright page: Some books will indicate the publication time on the copyright page, such as "Copyright, 20 17 First Edition", indicating that the book was published in 2065438+07;
2. Query by ISBN number: ISBN number is the unique identification code of books, and each book has its own ISBN number. You can query the publication time of the book by searching ISBN number online;
3, through the website to buy: books in major online shopping sites, such as Amazon. , will indicate the publication time of the book;
4. Inquire through the online library: In the bibliographic information of most online libraries, the publication time of the book will also be indicated.
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