Variations in the structure of the aftershaft and their taxonomic value. American Museum novitates ; no. 140

Miller, Waldron DeWitt.American Ornithologists' Union.2005-10-062005-10-061924http://hdl.handle.net/2246/44857 p. : ill. ; 24 cm.729958 bytesapplication/pdfen-USQL1 .A436 no.140, 1924Feathers -- Anatomy.Birds -- Classification.Variations in the structure of the aftershaft and their taxonomic value. American Museum novitates ; no. 140Variations in structure of the aftershafttext