TY  - JOUR
T1  - The 27-Day Period (Interval) in Terrestrial Magnetism
JF  - Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character (1905-1934)
VL  - 101
IS  - 712
SP  - 368
EP  - 391
PY  - 1922/08/01/
UR  - http://dx.doi.org/10.1098/rspa.1922.0051
M3  - doi:10.1098/rspa.1922.0051
AU  - Chree, C.
ER  -