Thomson, A. Landsborough Problems of Bird Migration
London, England Published by Houghton Mifflin, Hard Cover
Dated 1926, believe 1st edition, 350 pages with index. Dark green covers, with gold bird on front cover, slight wear. A brief review of Migration, phenomena in animal kingdom as a whole, then into 3 parts: Outlin e of principal known facts, more detailed studies by illustrative examples, and a statement and disclosure of main theoretical problems. Maps and charts. Natural History. Birds, migration, ornithology .