TY  - JOUR
T1  - On the Organization of the Fossil Plants of the Coal-Measures.--Part III. Lycopodiaceae. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 20
SP  - 199
EP  - 203
PY  - 1871/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1871.0047
M3  - doi:10.1098/rspl.1871.0047
AU  - Williamson, W.
ER  -