1882 - 2021
Beginning of time period
End of time period
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31. May 2014
The four-metre corridor
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23. May 1957
Rail tourism
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31. December 2015
Tunnels of the world
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31. December 1992
Tunnel vision
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31. December 1988
Order, build, operate
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23. May 1914
The battle with nature
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28. November 1989
No link for Eastern Switzerland
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10. December 2016
Costs and benefits
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17. May 2007
Historians and the NRLA
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17. December 1998
Supervision