TY  - JOUR
T1  - A Superior Limit to the Age of the Earth's Crust
JF  - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934)
VL  - 99
IS  - 696
SP  - 84
EP  - 86
PY  - 1921/04/06/
UR  - http://dx.doi.org/10.1098/rspa.1921.0025
M3  - doi:10.1098/rspa.1921.0025
AU  - Russell, H.
ER  -