Open Book

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, both with ribbon bookmarks.

Two Stacked Books With Bookmarks

A stack of two books laying horizontally.

Two Stacked Books

A bookshelf with three shelves and books.

Bookshelf

A simple table or desk with two stacked closed books, facing front.

Table With Books

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

Lit Filament Lightbulb

Opened Book 

Stacked Books

An apple and a stack of three books, two of which have bookmarks.

Apple And Stacked Books

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

Closed Book

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

The back of an open book with a round label on the cover.

Open Book Facing Back

Outlined Stack Of Closed Books

A row of many different standing closed books, as if they were on a shelf, seen from the side of their spines.

Books In A Row

A large pencil leaning on a stack of three books, two of which have bookmarks.

Large Pencil And Three Stacked Books With Bookmarks

A tall bookshelf with four shelves and many rows of books.

Rectangular Bookshelf With Books

A simple front-facing desk or table with two closed books laying flat, one with an apple on top.

Table With Books And An Apple

A row of stored books, binders or archives.

Stored Books Or Binders

A closed book with a ribbon bookmark laying flat, seen from its top or bottom.

Closed Book With Bookmark

A thick book with a different colored spine.

Book

Stacked Rectangles Or Books

An open book or magazine, facing back at an angle.

A large pencil and an open book with text and image blocks on the right page, a blank page on the left and a ribbon bookmark in the center.

Open Book With Large Pencil, Bookmark, Image And Text

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.

Two Piled Books

Bookcase With Books

A bookshelf with two shelves full of books.

A closed book with a ribbon bookmark sticking out from its bottom.

An opened book, seen from the side of the cover with lines and an abstract icon of circles in a logo.

Three standing different books, seen from the side of their spines.

Three Standing Books

Two Closed Books And An Apple

An open book with four parallel lines of text on each page, facing front.

Open Book Facing Front

Four stacked books or plain rectangles next to a vertical book or rectangle.

Stack Of Books Or Rectangles

A front-facing book shelf full of books, some tidy, some placed diagonally.

Book Shelf With books

A set of books with the last book leaning against the others.

Books

Stack Of Books

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

Open Book With 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.

Three stacked books or plain rectangles next to a vertical book or rectangle.

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

Illustrations of knowledge