The Ancient Volcanoes of Great Britain, Volume 1 (of 2)
CHAPTER XVII
DISTRIBUTION OF THE VOLCANIC CENTRES IN THE LOWER OLD RED SANDSTONE--CHARACTERS OF THE MATERIALS ERUPTED BY THE VOLCANOES
The Ancient Volcanoes of Great Britain, Volume 1 (of 2)
DISTRIBUTION OF THE VOLCANIC CENTRES IN THE LOWER OLD RED SANDSTONE--CHARACTERS OF THE MATERIALS ERUPTED BY THE VOLCANOES