Title:          The westward drift of the Earth's magnetic field
Subject:        Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences 1950.243:67-92
Author:         Royal Society ©2016
Producer:       ABBYY Recognition Server; modified using iText 4.2.0 by 1T3XT
CreationDate:   Tue Jun 28 00:29:46 2016
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