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Tunnels separate children from traffic
In 1924 Los Angeles built first tunnel for protection of school children; to date 46 tunnels have been built and are in constant use.
Tunnels separate children from traffic
In 1924 Los Angeles built first tunnel for protection of school children; to date 46 tunnels have been built and are in constant use.
Tunnels separate children from traffic
Nat. Safety News
Lefferts, E.B. (author)
National Safety News ; 21
1930
2 pages
3 Figs.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
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