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Pine Hills Elymus
Published in Rhodora, in 1967, in volume 69, issue 779, pages 330-351
Created: 2014-06-16, modified: 2016-07-26
Birds of the Black Hills
Published in The Auk, in 1901, in volume 18, pages 231-238
Created: 2013-03-08, modified: 2013-03-08