Geological Survey of Nigeria, 1:250,000 series /
Geological Survey of Nigeria.
Great Britain.Department of Technical Co-operation.
Kaduna,
196-
"For full description see Bulletin, Geological Survey of Nigeria, No. ..."
Includes "Diagrammatic sections," "Explanation," "Index of component 1:100,000 sheets," and "Index to Nigeria 1:250,000 sheets."
Interfiled with: Nigeria 1:250,000 geological series
Graphic index in central (thematic) file.
Geology