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Ancient Panama Canals
Published in Proceedings of the California Academy of Sciences, in 1917, in volume 7, pages 197-205
Created: 2011-06-28, modified: 2011-06-28
Case, E. L. June 29, 1875
Published in Asa Gray correspondence. Senders Ca-Cl, in 1875, pages 1-2
Created: 2017-06-24, modified: 2017-06-24
Abnormal shells
Published in Nautilis, in 1912, in volume 26, pages 38-42
Created: 2013-09-28, modified: 2013-09-28
Notes on Oreohelix
Published in Nautilis, in 1911, in volume 25, pages 18-19
Created: 2013-09-28, modified: 2013-09-28
New Peruvian Gesneriaceae
Published in Phytologia, in 1974, in volume 28, pages 233-240
Created: 2011-01-26, modified: 2023-02-16