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Social media
Handdrawn
Jolly Icons Free – 36 Hand-Drawn UI Icons
Automatic, robo, robot
Black
64x64
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Glyph
Black 48x48 Icons - free
Mobile, mobile device, platform
48x48
Win8 and iOS Tab Bar Icons - free
robot, phone, Android
60x60
3D
Professional Toolbar Icons - free
Android, base, robot