TY - BOOK AU - Thompson,Roy AU - Oldfield,Frank TI - Environmental magnetism SN - 0045380031 U1 - 538.7 19 PY - 1986/// CY - London, Boston PB - Allen & Unwin KW - Magnetic measurements KW - Geomagnetism N1 - Includes index; Bibliography: p. 206-219 ER -