Polythematic Structured Subject Heading System

traffic signals

traffic signals

Broader Terms

More specific terms

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Date of creation
20-Mar-2012
Accepted term
20-Mar-2012
Descendant terms
1
ARK
ark:/99152/t3061m3ry0mqzl
More specific terms
1
Alternative terms
0
Related terms
1
Notes
0
Metadata
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