Geological Literature Search (GEOLIS) (Geological Survey of Japan / AIST)
Authors=TRUSWELL J.F., COPE R.N.
Journal/Book_names=Geological Survey of Nigeria 1:250,000 Series Sheet 31, Geological Survey of Nigeria Bulletin No.29, 53p.
pages=1 sheet
Publish_year=1963
Publisher=Geological Survey of Nigeria
Language_of_Text=EN
note=付図 ; 大きさ（60 × 70 cm） ; 説明書の大きさ:25.3×20 ; 説明書頁:53 ; 矩形範囲情報（左下緯度 = 10, 左下経度 = 6, 右上緯度 = 11, 右上経度 = 7）
ID=90001226