TY  - JOUR
T1  - On a Determination of the Mean Density of the Earth and the Gravitation Constant by Means of the Common Balance. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 50
SP  - 40
EP  - 41
PY  - 1891/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1891.0004
M3  - doi:10.1098/rspl.1891.0004
AU  - Poynting, J.
ER  -