TY - BOOK AU - Sopher,S.R. TI - Palaeomagnetic study of the Sudbury irruptive AV - PAM QE185.A43 no.90 PY - 1963/// CY - Ottawa PB - Dept. of Mines and Technical Surveys, Canada KW - Paleomagnetism KW - Ontario KW - Sudbury region KW - Geology ER -