134 resultados para Grade crossing protection systems.


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Federal Railroad Administration, Office of Safety, Washington, D.C.

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Transportation Department, Washington, D.C.

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National Highway Traffic Safety Administration, Washington, D.C.

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"February 1991."

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"Sponsors, University Extension, University of California, Davis ... [et al.] ; co-sponsors, Corps of Engineers, U.S. Army ... [et al.]"--P. [2] of cover.

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Decisions in actions brought before the U. S. Civil Service Commission, as well as in cases initiated before the U. S. Merit Systems Protection Board under the Civil Service Reform Act of 1978

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Federal Highway Administration, Washington, D.C.

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