Informal discussion introduced by Professor A.L.L. Baker, Tunnels and Tunnelling, November, 1972, pages 540-542.
Details
- Extent:
-
2 pp.
- Identifier:
- ALLB/C/015
- Access:
- Open Access
- copyright:
Informal discussion introduced by Professor A.L.L. Baker, Tunnels and Tunnelling, November, 1972, pages 540-542.