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Business & finance
Pixel
24x24 Free Pixel Icons
Business, preview, office
Lavender
24x24
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Desktop apps
Smooth
Free Funktional Icons
office
48x48
Computer & hardware
3D
File Type icons
office, powerpoint, microsoft
256x256
Network & communications
Oxygen
Contact, office, card
128x128
UI
Silk
Access, office, Excel
16x16