Birds II Gyldenstolpe, Nils, 1886-1961 creator Swedish Zoological Expeditions to Siam, 1911-1912, 1914-1915. Zoological results, v. 4. contributor text book Stockholm Almqvist & Wiksells 1916 1916
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ENG Birds I issued as Svenska vetenskapsakademian, Stockholm. Handlingar, bd. 50, n:o 8. Birds Scientific Expeditions Thailand Svenska vetenskapsakademian, Stockholm. Handlingar, bd. 56, n:o 2 https://www.biodiversitylibrary.org/bibliography/57007 63224496 10.5962/bhl.title.57007 NIC