| http://www.w3.org/ns/prov#value | - Alternatively, written messages and other indicia can be printed on paper, cardboard, plastic, or other materials which are contained within the sign and viewable through a transparentdisplay sheet or backing.In accordance with an aspect of the invention pressure-sensitive adhesive is applied to the backing and covered with a removable protective layer to provide a self-sticking sign which facilit
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