The number of pages generally includes the number of pages in the text and other pages before and after the text. When recording, in addition to the number of pages in the text, it should also include the number of pages before and after the text (together with the number of pages in illustrations and photos).
When the page number of each bound book (volume) is marked separately, it is recorded as 1 volume, and the page number of each volume is indicated in brackets; When the number of pages exceeds 3 paragraphs, the number of pages can be omitted.