TY  - JOUR
T1  - On the Annual and Semi-Annual Seismic Periods. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 54
SP  - 82
EP  - 85
PY  - 1893/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1893.0055
M3  - doi:10.1098/rspl.1893.0055
AU  - Davison, C.
ER  -