Tunnels :
Mezau, T. M.,
Tunnels : Planning, design, construction / T. m. mezau and j. v. bartlett - volúmenes
0853122237 (v.1) 0-85312-361-6 (v.2)
Túneles
TA805 / M42
Tunnels : Planning, design, construction / T. m. mezau and j. v. bartlett - volúmenes
0853122237 (v.1) 0-85312-361-6 (v.2)
Túneles
TA805 / M42