TY  - BOOK
TI  - Harlech, Porthmadog & Y Bala : sheet OL 18 : 1:25,000
T2  - Explorer
SN  - 9780319263587
U1  - 912.42 
PY  - 2019///
PB  - Ordnance Survey
KW  - Harlech - Maps
KW  - Porthmadog - Maps
KW  - Y Bala - Maps
ER  -