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Psychological factors in highway design and traffic control problems; evaluation of design data for crossover distances,Spears, Sholto Marion, January 1900 (has links)
Thesis (Ph. D.)--University of Michigan, 1942. / Caption title. "Reprinted from Proceedings of the twenty-first annual meeting of the Highway Research Board, December, 1941." "Discussion": p. 215-220.
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