| 摘要 |
The present invention relates to a spring book for an electronic study device. The spring book for an electronic study device according to one embodiment of the present invention has protruding covers and inner sheets therebetween. The inner sheets are bound by springs and prevent the position change of the book. The spring book has a front and rear cover connection protruding unit which connects one end of the front and rear covers. The front and rear cover connection protruding unit is inserted into a book cover mount space unit. |
