TY - JOUR T1 - On the Organisation of the Fossil Plants of the Coalmeasures. Part XII. JF - Proceedings of the Royal Society of London (1854-1905) VL - 34 SP - 31 EP - 35 PY - 1882/01/01/ UR - http://dx.doi.org/10.1098/rspl.1882.0007 M3 - doi:10.1098/rspl.1882.0007 AU - Williamson, W. ER -