Studies of Peruvian birds. No. 63, The hummingbird genera Oreonympha, Schistes, Heliothryx, Loddigesia, Heliomaster, Rhodopis, Thaumastura, Calliphlox, Myrtis, Myrmia, and Acestrura
New York, American Museum of Natural History, [1953]
1953
American Museum of Natural History Library