Murphy, Martin, 1832-1926Nova Scotian Institute of Natural Science2009-11-152009-11-151889Murphy, Martin(1889). Terrestrial magnetism. Proceedings and Transactions of the Nova Scotian Institute of Natural Science, 7(3), 291-309.http://hdl.handle.net/10222/12257pp. 291-309enGeomagnetismMagnetic rangesCompassText