A closed book with a curved spine laying flat, seen from the side at an angle.

Closed Book Laying Flat

An open book displaying a diagram of an atom next to a diagram of a cylinder above the equation "(x+2)". 

Open Book With Math And Science Diagrams

Two closed books piled on top of one another. 

Two stacked books seen at an angle, the one at the bottom with a bookmark and the one on top with a round shape on its spine.

An open book with eight curved parallel lines of text on each page and a ribbon bookmark, facing front.

A thick closed book with a curved spine laying flat, seen from the side at an angle.

Four different-sized stacked books with curved spines.

A busy and overworked manager or employee surrounded by charts, graphs, and notifications.