On the Cretaceous Fossils of Aberdeenshire: With a Note on the position of the Chalkflints and Greensand; by W. Ferguson, Esq., F.G.S

J. W. Salter
1857 Quarterly Journal of the Geological Society  
doi:10.1144/gsl.jgs.1857.013.01-02.13 fatcat:26tu5akv7zh45lqyqzw4iyeuwe