PNG ICO ICNS MORE
UI
3D
Momentum Matte icons
Books
Teal
32x32
Books, delete
Mixed
Momentum Glossy icons
Books, Add
Firebrick
Edit, Books
Books, Go
Accept, Books
DarkCyan
Books, Error
Books, Info
Smooth
All Google icons
Books, Lb
DodgerBlue
128x128
ForestGreen
OliveDrab
48x48
PNG MORE
Pixel
Windows 8 Pack (Metro Style)
DarkSlateGray
26x26
Education & science
Aristocracy
LightSteelBlue
Healthcare & medical
Medical Icons
Black
256x256
Mobile apps
Android R2
r, Android, Books
512x512
Desktop apps
Farm-fresh
CornflowerBlue
Computer & hardware
Icons Unleashed Vol. 1 - Computer Hardware
learn, school, study
SaddleBrown
IconSweets 2
Books, nano, multiple
40x40
nano, Books, ipod
photo, image, Books
Books, shelf
Business & finance
Arzo
Books, school
Purple