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San Angelo Geological Society Presents Virgil E. Barnes and W. C. Bell as Leaders of Cambrian Field Trip, Llano Area, Mar. 19-20, 1954, in Honor of West Texas Geological Society

San Angelo Geological Society

出版	San Angelo Geological Society, 1954
URL	http://books.google.com.hk/books?id=EdmHGAAACAAJ&hl=&source=gbs_api