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Nature1 年
A Revised Classification of the Ludlovian Succession at Ludlow
Squirrell, H. C., Proc. Geol. Soc. Lond., No. 1564, 2 (1958). Tucker, E. V., Proc. Geol. Soc. Lond., No. 1564, 1 (1958). Phipps, C. B., Ph.D. Thesis, University of ...