TY  - JOUR
T1  - On the Amount and Changes of the Polar Magnetism at Certain Positions in Her Majesty's Iron-Built and Armour-Plated Ship 'Northumberland'
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 158
SP  - 487
EP  - 503
PY  - 1868/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1868.0020
M3  - doi:10.1098/rstl.1868.0020
AU  - Evans, F.
ER  -