Geological map of the tinfields of Nigeria /
Falconer, J. D.
London : E. Stanford,
1927.
At head of title: Geological survey of Nigeria.
Geologically surveyed 1919-1926.
Insets: Index plan; The Ilorin tinfield; Geology of a part of Calabar district; Geology of the Afu Hills, Nassarawa province; Key plan of Nigeria.