TY  - JOUR
T1  - On the Organisation of the Fossil Plants of the Coal-Measures. Part XVIII
JF  - Philosophical Transactions of the Royal Society of London. B (1887-1895)
VL  - 182
SP  - 255
EP  - 265
PY  - 1891/01/01/
UR  - http://dx.doi.org/10.1098/rstb.1891.0005
M3  - doi:10.1098/rstb.1891.0005
AU  - Williamson, W.
ER  -