Duke-Elder, ea 1961
Duke-Elder, S. and K. C. Wybar, 1961, System of Ophthalmology, Vol. 2; The Anatomy of the Visual System, London: Henry Kimpton
Duke-Elder, S. and K. C. Wybar, 1961, System of Ophthalmology, Vol. 2; The Anatomy of the Visual System, London: Henry Kimpton
