Avifauna Svalbardensis. With a Discussion on the geographical Distribution of the Birds in Spitsbergen and adjacent Islands. I. General Part. II. Special Part. Bibliography.
Oslo, 1963. Lex8vo. Private hcloth. Bound with orig. wrappers. 460 pp., 18 plates (9 in colours), fold. map and 33 distributionmaps in pocket at end. (Norsk Polarinstitutt Skr. Nr. 29).