TY  - JOUR
T1  - Liberation of Helium from Radio-Active Minerals by Grinding
JF  - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934)
VL  - 82
IS  - 554
SP  - 301
EP  - 306
PY  - 1909/05/26/
UR  - http://dx.doi.org/10.1098/rspa.1909.0034
M3  - doi:10.1098/rspa.1909.0034
AU  - Gray, J.
ER  -
