Geological Literature Search (GEOLIS) (Geological Survey of Japan / AIST)
Authors=JONES H.A., HOCKEY R.D.
Journal/Book_names=Geological Survey of Nigeria 1:250,000 Series Sheet 68, Geological Survey of Nigeria Bulletin No.31, 101p.
pages=1 sheet
Publish_year=1964
Publisher=Geological Survey of Nigeria
Language_of_Text=EN
note=付図 ; 大きさ（62 × 83 cm） ; 説明書の大きさ:25.3×20.5 ; 説明書頁:101 ; 矩形範囲情報（左下緯度 = 6, 左下経度 = 2.6667, 右上緯度 = 7, 右上経度 = 4）
ID=90001230