Preliminary magnetic results : August 1982, Hartland: Institute of Geological Sciences, Geomagnetism, Geomagnetism Research Group: preliminary magnetic results (Hartland) 82/8, 1982 - 1v / A.M. Allen, E.M. Reader, K. Dyson, T.J. Harris, A.G. Lewis and J.C. RiddickBooks/Monographs