TY  - JOUR
T1  - On Professor Haughton's Estimate of Geological Time
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 27
SP  - 179
EP  - 183
PY  - 1878/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1878.0035
M3  - doi:10.1098/rspl.1878.0035
AU  - Darwin, G.
ER  -