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1Published 1978“...Transportation Research Board special report ;...”
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2Future directions of urban public transportation (Conference) 1982, Massachusetts : Proceedings ....Published 1983“...Transportation Research Board special report ;...”
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3Published 1978“...Transportation Research Board special report ;...”
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4Published 1980“...Transportation Research Board special report 189...”
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5Edition: Rev. ed.“...Transportation Research Board special report 209...”
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