TY  - JOUR
T1  - On the Organization of the Fossil Plants of the Coal-Measures.--Part VIII. Ferns (Continued) and Gymnospermous Stems and Seeds. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 25
SP  - 68
EP  - 73
PY  - 1876/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1876.0016
M3  - doi:10.1098/rspl.1876.0016
AU  - Williamson, W.
ER  -