A stack of six books is centrally positioned on a light wooden surface

A stack of six books is centrally positioned on a light wooden surface. From top to bottom, the books consist of a white hardcover, a tan hardcover, an off-white softcover, a gray softcover, a light gray softcover with a visible green spine edge, and a cream-colored softcover. To the immediate right and slightly behind the book stack, a clear plastic bottle of "Velingrad" mineral water, featuring a blue cap and a light blue label, is present. The background exhibits a light green wall. A light wooden shelf is visible in the upper left background, and a dark shelf edge is in the lower right background. A blurred white office machine with a small blue LCD screen and part of a keypad is visible in the lower left foreground. The scene is located within the city of Sofia, Bulgaria.