Panel comprising at least one viewing window, and book form with such panels.

The panel (10) has at least one window (13) of display carried out in a facing sheet (11) to view illustrations and / or text or conceal thereof. It comprises a carrier sheet (12) adjoins behind the facing sheet (11); a booklet (2) is fixed on the carrier sheet (12) in correspondence with said window (13), and with dimensions less than that of the window so as to be laminated in therethrough, and a pane (3) sliding is placed between the support sheet (12) and the facing sheet (11) for, in a closed position, close the window and said passbook cover, the sliding cover (3) being guided in rails (4) located between the parallel facing sheet (11) and the carrier sheet (12) in direct proximity of two opposite sides of the window (13). Application especially to the making of books formed by assembling a plurality of panels.