| 摘要 |
Booklet 20, such as a travel guide, including a front cover 2, a rear cover 4 and a spline 3 formed from a single sheet of material, and enclosing the pages 5. Two separate wire bidings elements 6a, 6b join the cover and loose pages 5. A first wire binding element 6a joins an upper portion of the cover and pages and a second wire binding element 6b joins a lower portion of the cover and pages. An uninterrupted portion of the spline is provided between the two binding elements.
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