TY  - JOUR
T1  - Helium and Radio-Activity in Rare and Common Minerals
JF  - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934)
VL  - 80
IS  - 542
SP  - 572
EP  - 594
PY  - 1908/06/20/
UR  - http://dx.doi.org/10.1098/rspa.1908.0053
M3  - doi:10.1098/rspa.1908.0053
AU  - Strutt, R.
ER  -