@book{28514,
	author = {King, Basil Charles. and Swardt, A. M. J. de,},
	title = {The geology of the Osi area, Ilorin Province,},
	year = {1949.},
	series = {Nigeria. Geological Survey. Bulletin},
	address = {[Kaduna]},
	note = {One folded map in pocket.}
}