Birds of Arabia.
4to. XIII, (1), 624 pp. With 19 colour plates, 9 photographic plates, 53 text illustrations, 35 text maps, and a folding map of the Arabian Peninsula (48 x 50 cms) in a lower cover pouch. Publisher's original orange cloth with green spine title; no dust jacket.
First edition of the author's magnum opus.
Stamp of the Göteborgs Museum (Zoological Dept.) on flyleaf; in excellent condition.