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Mixed
Flat
Pictograms vol.1
A4, office, Information
Gainsboro
369x512
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Office Vol.2
Author, Books, read
512x512
Office Vol.3
Book, reading, Library
DimGray
reading glasses, read, Accessory
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Things
Book, knowledge, education
LightSkyBlue
Higher Education Icon Set
study, learning, knowledge
DarkSlateBlue
256x256