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1763 documents found.
Published:
| Joint Committee of American Association of State Highway and Transportation Officials AASHTO, Institute of Traffic Engineers and National Conference on Street and Highway Safety
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| -
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| Centraal bureau voor de Statistiek, hoofdafdeling statistieken van verkeer en vervoer
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| Centraal bureau voor de Statistiek, hoofdafdeling statistieken van verkeer en vervoer
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| -
Published:
| Schumacher, R.O.
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| Festinger, L.
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| Huber, L.
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| Schouten, J.F.
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| Hopkinson, R.G. & Bradley, R.C.