Abstract: A furniture construction such as bookcases, shelves and room dividers is assembled without fasteners from three basic interlocking notched elements. The three elements are planar, longitudinal horizontal and vertical support elements and shelf units. The horizontal support elements and a first shelf unit form the base and the vertical support elements are interconnected with the base and additional shelving units by the notches in each of the elements. The vertical supports on the ends have the notches in the leading edges and the vertical supports intermediate the ends have the notches in the following edges.