TY  - JOUR
T1  - Account of Pendulum Experiments Undertaken in the Harton Colliery for the Purpose of Determining the Mean Density of the Earth. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 8
SP  - 13
EP  - 18
PY  - 1856/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1856.0007
M3  - doi:10.1098/rspl.1856.0007
AU  - Airy, G.
ER  -