AIGA/USDot image of stairs (inverted)
AIGA/USDOT
2012-03-14
<a rel="nofollow" class="external free" href="http://www.aiga.org/uploadedImages/AIGA/Content/Tools_and_Resources/10a_stairs_inv.gif">http://www.aiga.org/uploadedImages/AIGA/Content/Tools_and_Resources/10a_stairs_inv.gif</a>