TY  - JOUR
T1  - Magnetic Survey of Belgium in 1871. 
JF  - Proceedings of the Royal Society of London (1854-1905)
VL  - 21
SP  - 165
EP  - 166
PY  - 1872/01/01/
UR  - http://dx.doi.org/10.1098/rspl.1872.0035
M3  - doi:10.1098/rspl.1872.0035
AU  - Perry, S.
ER  -