The geology of the Osi area, Ilorin Province
By: by B.C. King and A.M.J. de Swardt.
Contributors: De Swardt, A. M. J.; Geological Survey of Nigeria.
Series: Bulletin / Geological Survey of Nigeria -- No.20; Geological Survey of Nigeria -- No.20.
Publisher: Geological Survey of Nigeria
Published: 1949
Place of publication: Kaduna
Language: eng
Number of pages: 92
Notes: Fold. map in pocket.