On the present distribution and origin of the calcareous concretions in coal seams, known as "coal balls"
Author(s)
Bibliographic Information
On the present distribution and origin of the calcareous concretions in coal seams, known as "coal balls"
（Philosophical transactions of the Royal Society of London, ser. B,
Royal Society, [1907]
Available at / 1 libraries
-
No Libraries matched.
- Remove all filters.