1, maybe there is no online version of this book.

2. Download failed, not downloaded to the mobile phone.

3. The file is damaged when downloading.

4. The file was deleted by mistake after downloading. I suggest you download it again.

If you want to enjoy the online resources of books, you can log on to the mobile phone client of the library, bind the public library network joint reader card, and realize book retrieval and some digital resources reading services; Realize the functions of mobile phone reservation, borrowing information viewing, loan renewal, online browsing, book due return and so on. Users can get a lot of books, newspapers, magazines and audio-visual resources after logging in; At the same time, you can browse the city's cultural news and understand the activities of the city's public libraries.