TY  - BOOK
AU  - Penn,I.E.
AU  - Evans,C.D.R.
ED  - Her Majesty΄s Stationery Office
TI  - The Middle Jurassic (mainly Bathonian) of Cardigan Bay and its palaeogeographical significance
T2  - Institute of Geological Sciences : Natural Environment Research Council. 76/6
SN  - 0118812416
U1  - 560.1766 
PY  - 1976///.
CY  - London: 
PB  - Her Majesty's Stationery Office, 
KW  - Jurassic period
KW  - Paleontology
N1  - Includes bibliographical references (p. 4, 6)
ER  -