Author: Hudec, Karel & J.Rooth.
Title: Die Graugans (Anser anser L.).
Description: Wittenberg, 1970. 148 pp. 27 text-figs, 80 ills & 1 col.pl. Soft cover. (Brehm-Bücherei 429).

Keywords: Birds Goose Monography Vogels Ganzen Monografie