TY  - JOUR
T1  - On the True Fructification of the Carboniferous Calamites. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 42
SP  - 389
EP  - 390
PY  - 1887/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1887.0085
M3  - doi:10.1098/rspl.1887.0085
AU  - Williamson, W.
ER  -