TY - JOUR T1 - Magnetic Survey of the West of France. JF - Proceedings of the Royal Society of London (1854-1905) VL - 17 SP - 486 EP - 487 PY - 1868/01/01/ UR - http://dx.doi.org/10.1098/rspl.1868.0101 M3 - doi:10.1098/rspl.1868.0101 AU - Perry, S. ER -