An aerial bookcase with 3 shelves, present in the catalogue of the Galerie M.A.I. in 1952, to play with construction/deconstruction. It is composed of bronze lacquered steel wall uprights. The shelf supports are made of brass lacquered steel. The bookcase exists in two versions: shelves in clear, embossed, laminated glass or shelves in stained beech veneered plywood. Lamination techniques : clear, embossed, laminated glass is made of 2 glass plates, with one side ribbed lengthwise, and one smooth side. The 2 plates are superimposed by crossing them, thus giving the appearance of square embossing. This enables a better resistance and the absence of broken glass, which is dangerous in the event of breakage. The shelves are removable by slightly spreading the uprights on the sides.