TY  - SER
TI  - Tunnels & tunnelling
SN  - 0041-414X
PY  - 1969///-
CY  - London
PB  - Polygon Media Ltd.
KW  - Tunnels
KW  - Periodicals
KW  - Tunneling
N1  - UKM: v.10 (1978)- . Judul asal'Tunnels & tunnelling' sehingga isu Februari, 1997
ER  -