A New Plant ( Thallomia ) showing Structure, from the Downtonian Rocks of Llandovery, Carmarthenshire
- 1 March 1931
- journal article
- Published by Geological Society of London in Quarterly Journal of the Geological Society
- Vol. 87 (1-4), 551-562
- https://doi.org/10.1144/gsl.jgs.1931.087.01-04.19