Abstract: The invention relates to a bookbinding formed of quires (1) sewn along seams (2) to tapes, cords or the like (3), which are assembled with the plats (4), end-papers (5) being inserted between the plats and the quires. The end-papers (5) are made of flexible material resistant to folding and tearing and are sewn to the quires (1). The plats (4) are substantially thicker than the tapes or cords (3) and are provided externally with recesses (9) in the shape of notches or slots formed by molding, stamping or thermoforming, in registry with the bands or cords (3), the width and depth of these recesses (9) being such that the bands or cords (3) will be fully retracted therein without protruding above the surface of the plats, these recesses extending into apertures (12) having a cross-section matching that of the bands or cords (3) for allowing them to be threaded through these apertures (12).