Vierter Nachtrag zur Ornis Caucasica.
Contributors: Blasius, Rudolf.; Grabowsky, F.J.; Ramsay, E.P.
Publisher: Radde
Published: 1890
Place of publication: Wien
Language: ger
Number of pages: 43
Subjects: Birds -- Caucasus
Notes: Bound with Grabowsky, F.J.  Biologische Notizen über einige Vögel Süd-Ost-Borneo's 1885.  and with Blasius, R.  Beiträge zur Ornithologie Japan's.  and with Ramsay, E.P.  Notices on the migration of birds in Australia, 1885.

Reprinted from "Ornis Jahrgang 1890".