Published in Bihang till Kongl. Svenska vetenskaps-akademiens handlingar, in 1887, in volume 12, issue 7, pages 1-44

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Published in Hedwigia, in 1895, in volume 34, pages 335-338

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Published in Hedwigia, in 1902, in volume 41, pages 1-33

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Published in Journal für Ornithologie, in 1854, in volume 2, pages 70-73

Created: 2014-09-04, modified: 2014-09-04

Published in Sitzungsberichte der Akademie der Wissenschaften mathematisch-naturwissenschaftliche Klasse, in 1898, in volume 107, pages 48-52

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Published in Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Tiere, in 1895, in volume 8, pages 100-127

Created: 2016-07-20, modified: 2016-07-20