Pictograms
Pittogrammi_principi ottici (lesson 7)
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Pittogrammi_griglia
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Links
Pittogrammi di Aicher per ERCO
Progetto Siruca di Fabrizio Schiavi (open-source)
AIGA symbol signs
A system of 50 symbol signs designed for use in airports and other transportation hubs and at large international events.
Produced through a collaboration between AIGA and the U.S. Department of Transportation (DOT).