| 摘要 |
The invention concerns the well-known problem that books and particularly hoop paper binders on a shelf are liable to tilt over, if they are not effectively supported at the sides. According to the invention this problem may be overcome in a simple manner in that the book members, at their lower back area, are provided with an angle plate (10) having a flange portion (14), which projects freely forwardly along a rear lower edge area of the book member, whereby, when the book member is placed on the shelf (2) the flange portion (14) can be inserted into holding engagement with a forwardly open holding groove (6) of the shelf or underneath the front edge of the shelf. |
