TY  - BOOK
AU  - Cameron,I.B.
AU  - Calvert-Harrison,E.N.
ED  - Her Majesty΄s Stationery Office
TI  - Sources of aggregate in Northern Ireland
T2  - Institute of Geological Sciences : Natural Environment Research Council. 77/1
SN  - 0118812793
U1  - 628.114161 
PY  - 1977///.
CY  - London: 
PB  - Her Majesty's Stationery Office, 
KW  - Sources
KW  - Northern Ireland
N1  - Includes bibliographical references (p. 21) and index (p. 16-19)
ER  -