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- [3] CAMBRIAN PALEOMAGNETIC FIELD FOR NORTH-AMERICAN CRATON TRANSACTIONS-AMERICAN GEOPHYSICAL UNION, 1978, 59 (04): : 263 - 264
- [5] ORDOVICIAN PALEOMAGNETIC FIELD FOR NORTH-AMERICAN CRATON TRANSACTIONS-AMERICAN GEOPHYSICAL UNION, 1978, 59 (04): : 264 - 264