Media type: E-Article Title: Detection of M-Regions in Geomagnetic Data Contributor: Pecker, Jean-Claude; Roberts, Walter Orr imprint: American Association for the Advancement of Science (AAAS), 1954 Published in: Science Language: English DOI: 10.1126/science.120.3122.721 ISSN: 0036-8075; 1095-9203 Keywords: Multidisciplinary Origination: Footnote: