Author: Holstein, Vagn.
Title: Duehogen Astur Gentilis Dubius (Sparrman).
Description: Kobenhavn, 1942. 155 pp. Ills. Rebound in hardcover with gilt title. (Biologiske studier over Danske rovfugle I)Danish text. With English summary. Mit deutscher Zusammenfassung.

Keywords: Birds of prey Europe Scandinavia Roofvogels Europa Scandinavië