Freight movement and demand : [reports for the Board's 57th annual meeting]
Annual meeting. Transportation Research Board ; 57 ; 1978 ; Washington, DC Annual meeting. Transportation Research Board ; 57 (Washington, DC) : 1978.
1978
III, 35 S.
graph. Darst.
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Conference Proceedings
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The block signal board's inspection reports
Engineering Index Backfile | 1912
NTIS | 1978
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