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On the Teeth of Ptychodus and their Distribution in the English Chalk
Dibley, G. E.Volume:
67
Language:
english
Journal:
Quarterly Journal of the Geological Society
DOI:
10.1144/GSL.JGS.1911.067.01-04.10
Date:
February, 1911
File:
PDF, 6.06 MB
english, 1911