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Signs
Flat
Universal Interface
sign, cross, plus
Black
512x512
Clean Icons
Add, sign, adding
Interface and web
symbol, cross, symbols
GraphicsBay 36 Icons
interface, plus, signs
iOS7 Premium
addition, Plus Sign, Add
Universal 12
plus, Plus Sign, addition
iOS7 Set Filled 1
Plus Sign, Addition Sign, addition
iOS7 Premium Fill 2
cross, adding, signs
Plus Sign, Add, addition
Facebook Pack
Squares, adding, square
addition, plus, Add
gcons
Plus Sign, plus, addition
Foundation
addition, Add, Plus Sign
plus, signs, adding