Safety At the Crossing

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OS_ENG_v21_i02_004b.pdf (61.88 KB)

Date

1937-12

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Ohio State University, College of Engineering

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Ohio State Engineer, vol. 21, no. 2 (December, 1937), 4.

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http://hdl.handle.net/1811/35449

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Ohio State Engineer: Volume 21, no. 2 (December, 1937)