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Die Farbestoffe in den Federn
Published in Journal für Ornithologie, in 1858, in volume 6, pages 311-315
Created: 2014-09-04, modified: 2014-09-04
On the Pteroclidæ
Published in Annals And Magazine of Natural History, in 1881, in volume 7, pages 425-426
Created: 2011-09-29, modified: 2011-09-29