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- catalog contributor b7303158.
- catalog created "1949.".
- catalog date "1949".
- catalog date "1949.".
- catalog dateCopyrighted "1949.".
- catalog extent "iv, 246 p.".
- catalog issued "1949".
- catalog issued "1949.".
- catalog language "eng".
- catalog publisher "Washington, U.S. Govt. Print. Off.,".
- catalog spatial "United States".
- catalog subject "HE1762 .U5 1949f".
- catalog subject "Railroads United States Safety measures.".
- catalog title "Railroad safety (communications systems for trains) Hearings before a subcommittee of the Committee on Interstate and Foreign Commerce, United States Senate, Eighty-first Congress, first session, on S. 238, a bill to amend section 25 of the Interstate commerce act to require certain common carriers by railroad to install and maintain communications systems and to establish and observe operating rules, regulations, and practices to promote safety of employees and travelers on railroads, and for other purposes.".
- catalog type "text".