Não informado. (1966). World survey of current research and development on roads and road transport. International Road Federation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. World Survey of Current Research and Development on Roads and Road Transport. Washington: International Road Federation, 1966.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. World Survey of Current Research and Development on Roads and Road Transport. International Road Federation, 1966.
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