Berlin u. Hamburg, 1937-79. Lex8vo. Vol 1-8 in hcloth, 9-24 in stiched boards, rest in parts. With ""Generalregister 1-25 (1937-68)"" Lacks last issue of vol. 22.
In this periodical Lorenz together with Koehler laid the scientific foundations for animal ethology. Many contributions by Lorenz, Koehler, Nico Tinbergen and others.