The Middle Jurassic (mainly Bathonian) of Cardigan Bay and its palaeogeographical significance / I. E. Penn and C. D. R. Evans. --.
Series Titles:
Great Britain. Institute of Geological Sciences. Report ; no. 76/6 Report - Great Britain Institute of Geological Sciences ; no. 76/6 Report (Institute of Geological Sciences (Great Britain)) ; 76/6. Report - Great Britain Institute of Geological Sciences ; no. 76/6.