Transportation Research Thesaurus (TRT) [online]. Washington, DC: Transportation Research Board of the National Academies, 1996-. http://trt.trb.org/trt.asp (30 April 2007)

Transportation Research Thesaurus (TRT) [online]. Washington, DC: Transportation Research Board of the National Academies, 1996-. http://trt.trb.org/trt.asp (30 April 2007)

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http://vocab.getty.edu/aat/source/2000048059
1000291914-en
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Transportation Research Thesaurus (TRT) [online]. Washington, DC: Transportation Research Board of the National Academies, 1996-. http://trt.trb.org/trt.asp (30 April 2007)

Document
http://vocab.getty.edu/aat/source/2000048059
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Transportation Research Thesau ...... rb.org/trt.asp (30 April 2007)
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Transportation Research Thesaurus (TRT) (1996-)
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