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Seller's Description:
1970. Geological Society of America. Inscription by author to Alwyn Williams, Signed by Alwyn Williams. Hard Cover. Book-VG, foxing on page edges. DJ-Good, marked & foxing. 10x6.5. 421pp. 74 b/w plates. This is an attempt to discover the make-up of brachiopod faunas of Siegenian and Emsian age in the Great Basin, particularly as they occur in the more fossiliferous localities in central Nevada.
