Note 115 — Chapter XI · THE CAMBRIAN VOLCANOES OF NORTH WALES, THE MALVERN HILLS AND WARWICKSHIRE
Reading edition
Proc. Geol. Soc. vol. iv. p. 212; Quart. Journ. Geol. Soc. vol. iii. (1847), p. 136.
Reading edition
Proc. Geol. Soc. vol. iv. p. 212; Quart. Journ. Geol. Soc. vol. iii. (1847), p. 136.