Eyton (Thomas Campbell) ― Osteologia avium. A sketch of osteology of birds. Wellington, Salop : R. Hobson, 1867.
https://archive.org/stream/OsteologiaaviumIIEyto#page/n140/mode/1up
Eyton (Thomas Campbell) ― Osteologia avium. A sketch of osteology of birds. Wellington, Salop : R. Hobson, 1867.
https://archive.org/stream/OsteologiaaviumIIEyto#page/n140/mode/1up