TY  - SER
AU  - Johnston,T.P.
TI  - Geology of the country around Derrygonnelly and Marble Arch - Memoir for 1:50 000 Geological Sheets 44, 56 and 43 (Northern Ireland)
PY  - 1998///
CY  - London
PB  - Geological Survey of Northern Ireland
KW  - Issue
ER  -