The IKEA Billy bookcase series is a classic design with an emphasis on functionality and flexibility. The Billy system is designed to adapt to many types of spaces and uses.
How to make IKEA BILLY BOOKCASE built-ins - Place Of My Taste
IKEA Billy Bookcases Dimensions & Drawings
BILLY bookcase, brown walnut effect, 311/2x11x413/4 - IKEA
BILLY / OXBERG bookcase, white, 63x113/4x791/2 - IKEA
IKEA Billy Bookcases Dimensions & Drawings
Watch 2 Designers Transform The Same IKEA Billy Bookcase
BILLY bookcase, white, 311/2x11x791/2 - IKEA
BILLY bookcase, white, 153/4x11x931/4 - IKEA
Dimensions of an IKEA Billy Corner Bookcase? - Ars Technica
IKEA Redesigns Its Bestsellers, Starting With the Billy Bookcase - WSJ