TY  - JOUR
T1  - On the Annual Variation of the Magnetic Declination, at Different Periods of the Day
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 141
SP  - 635
EP  - 641
PY  - 1851/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1851.0032
M3  - doi:10.1098/rstl.1851.0032
AU  - Sabine, E.
ER  -