TY - JOUR T1 - On the Organization of the Fossil Plants of the Coal-Measures. Part XIX JF - Philosophical Transactions of the Royal Society of London. B (1887-1895) VL - 184 SP - 1 EP - 38 PY - 1893/01/01/ UR - http://dx.doi.org/10.1098/rstb.1893.0001 M3 - doi:10.1098/rstb.1893.0001 AU - Williamson, W. ER -