This solid wood bookcase is designed with durability in mind. No matter what material you use to construct the bookcase it will last a very long time.
The top and middle shelves are mounted with linear (sliding) dovetails providing secure, durable construction. The bottom shelf is also on a linear dovetail. The baseboard is secured from the inside with wood screws.
The solid wood back slats are v-style tongue and groove construction for appearance and to allow for any wood movement.