Security booklet

A security booklet comprising i)a cover foldable about an axis; ii)a set of page sheets stitched together along the axis about which they can be folded to define a set of pages, wherein each page sheet is formed of a single fibrous sheet; wherein iii)one part of one of the page sheets laterally offset from the axis is adhered to the cover, while another part of the said one page sheet can be folded separately from the cover and the other pages about the axis. 种安全小册子，包括：i)个封面，该封面绕个轴线可折叠；ii)组页面片材，该组页面片材沿着能够使它们折叠所绕的轴线装订在起以限定组页面，其中每个页面片材由单个纤维片材形成；其中iii)所述页面片材中的个页面片材的从该轴线横向偏移的部分被粘附到该封面，同时能够单独使所述个页面片材的另部分绕该轴线从该封面和其他页面折叠。