Note 257 — Chapter XIII · THE ERUPTIONS OF LLANDEILO AND BALA AGE
Reading edition
Mr. Harker, Quart. Journ. Geol. Soc. vol. l. (1894) p. 312, li. (1895) p. 125. Geol. Mag. 1894, p. 551.
Reading edition
Mr. Harker, Quart. Journ. Geol. Soc. vol. l. (1894) p. 312, li. (1895) p. 125. Geol. Mag. 1894, p. 551.