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Urban mass transit R. & D hearings before the Subcommittee on Transportation, Aviation, and Communications of the Committee on Science and Technology, U.S. House of Representatives, Ninety-sixth Congress, second session, April 1, 2, 1980
- "Urban mass transit R. & D. : hearings before the Subcommittee on Transportation, Aviation, and Communications of the Committee on Science and Technology, U.S. House of Representatives, Ninety-sixth Congress, second session, April 1, 2, 1980"
- "Urban mass transit R. & D hearings before the Subcommittee on Transportation, Aviation, and Communications of the Committee on Science and Technology, U.S. House of Representatives, Ninety-sixth Congress, second session, April 1, 2, 1980"@en