Book case that has curved side pieces and the shelves are hand shaped to match the curve of the sides.
The Shelves sit into stopped grooves on both sides with a notch cut out of the shelves.
The moulding cut into the top of the book case is a 3/4" cove
The moudling around the bottom is a 4 1/2" cove, cut on the table saw.
Could use solid wood for the construction, or plywood with edge banding.