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- 84604122 contributor B4841939.
- 84604122 created "1984.".
- 84604122 date "1984".
- 84604122 date "1984.".
- 84604122 dateCopyrighted "1984.".
- 84604122 extent "iii, 183 p. :".
- 84604122 issued "1984".
- 84604122 issued "1984.".
- 84604122 language "eng".
- 84604122 publisher "Washington : U.S. G.P.O.,".
- 84604122 spatial "United States".
- 84604122 subject "363.1/22 19".
- 84604122 subject "KF27 .S3997 1984i".
- 84604122 subject "Railroad tracks United States Safety measures.".
- 84604122 subject "Railroads Safety appliances United States Technological innovations.".
- 84604122 title "Rail track safety monitoring technology : hearing before the Subcommittee on Transportation, Aviation, and Materials of the Committee on Science and Technology, House of Representatives, Ninety-eighth Congress, second session, July 27, 1984.".
- 84604122 type "text".