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Education & science
Smooth
Bee Customized Icon
icon | Icon search engine
DodgerBlue
256x256
Beecustomized
simple
Social media
Power Up Your Digg
Blue
DarkCyan
128x128
green
Olive
227x227
red
DarkRed
189x189
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gray, smaller
LightGray
84x84
Bllue
142x142
Orange, smaller
DarkGoldenrod
52x52
118x118
Bllue, smaller
smaller, green
smaller, red
Firebrick
72x72
gray
DarkSlateGray
149x149
235x235
Orange
133x133
71x71
Social Networks Pro Icons
Skype
DimGray
Delicious
Facebook, social media
SteelBlue
google, Buzz