TY  - JOUR
T1  - Observations on the Permanency of the Variation of the Compass of Jamaica
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 96
SP  - 348
EP  - 356
PY  - 1806/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1806.0020
M3  - doi:10.1098/rstl.1806.0020
AU  - Robertson, J.
ER  -