Two Piled Books

Two closed books piled up on one another.

Stack Of Two Books

A closed book laying flat, seen from the side at an angle.

Closed Book Laying Flat

A closed book laying flat, seen from its top or bottom.

A stack of two books laying horizontally.

Two Stacked Books

A collection of many books, standing and facing side, as if they were on a shelf.

Book Collection

Closed Book

An open book seen from the back at an angle.

Open Book

A closed book or notebook laying flat, facing side.

A row of four vertical books, three straight and one tilted, seen from the side.

Row Of Four Books 

A turned-on filament light bulb with a wire inside and a screw bottom.

Lit Filament Lightbulb

A desk lamp standing on a pile of two books.

Desk Lamp Standing On Pile Of Books

An upper view of a vertically tilted closed book.

Tilted Closed Book 

Shelf With Books

A plain closed book, tilted and facing front at an angle.

Pile Of Four Books

Three books of different sizes stacked horizontally.

Three Stacked Books

A semi-filled library shelf with books and a globe.

Bookshelf 

A closed book seen from the side, laying flat.

A closed book laying flat, seen from the bottom.

A closed book upright, facing front at an angle.

A closed book laying flat, seen from the side.

Pile Of Three Books

Three organized file books or binders, seen from the side.

Three Binders

Three books standing, one faced front and two faced side.

Three Standing Books

A bookshelf with many books and a small globe.

Bookshelf

A stack of books facing the side, as if they were on a bookshelf.

Five Books

Closed book 

Two books standing, one thicker and straight, the other slimmer and tilted, seen from the side.

Two Standing Books 

Three books stacked vertically, seen from the side.

Row Of Three Books 

A thick closed book laying flat, seen from the side.

A closed book facing side while laying flat.

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

Illustrations of knowledge