Research on traffic law enforcement effects of the enforcement of legislation on road user behaviour and traffic accidents
| مؤلف مشترك: | |
|---|---|
| التنسيق: | كتاب |
| اللغة: | English |
| منشور في: |
[Paris]
1974.
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| سلاسل: | Road research
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| الموضوعات: |