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Mixed
Outline
Thin Line Icons for SEO and Development
flipchart, Blackboard, Formula
Black
512x512
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Education & science
Handdrawn
Brainy Icons Free — 36 Science and Education Icons
drinks, Running, Chemistry
64x64
Formula, hand drawn, square root
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Computer & hardware
Smooth
Crystal Project
Cursor, stock, Formula
16x16
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24x24
Transportation
3D
Car Icon Set
Car, vehicle, transportation
474x474
Desktop apps
Free Applications Icons
document, Formula, retort
UI
Pixel
Gnome icons
Formula, Cursor