1928-1930 (1st ed.) 3 Volumes. 4to. 3 volumes, 878, [32] p., 458 figs, 92 col. pls, roy. 4to, red hcalf. A good copy of this comprehensive work ont he birds of Denmark.
Kbhvn., 1928-30. 4to. 3 solide helshirtbd. Rigt illustr. med 94 plancher, delvis i farve.