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Ludlow stages |
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| Authors: | CHARLES H. HOLLAND JAMES D. LAWSON VICTOR G. WALMSLEY DENNIS E. WHITE |
| Affiliation: | Department of Geology, Trinity College, Dublin 2, Ireland;Department of Geology, University of Glasgow, Glasgow G12 8QQ, Scotl;Department of Geology, University College of Swansea, Singleton Park, Swansea SA2 8PP, South Wales;Institute of Geological Sciences, Exhibition Road, London SW72DE, England;5th March, 1980. |
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