Geological Literature Search (GEOLIS) (Geological Survey of Japan / AIST)
Authors=O'HARA Norbert W.
Journal/Book_names=Geological Society of America, Map and Chart Series MC-41 Sheet 1 of 3; Great Lakes Region Gravity and Magnetic Map Sequence
pages=1 sheet
Publish_year=1981
Publisher=Geological Society of America
Language_of_Text=EN
note=縮尺=1:2,500,000 ; 大きさ（85 × 71 cm） ; 矩形範囲情報（左下緯度 = 37, 左下経度 = -96, 右上緯度 = 52.5, 右上経度 = -75）
ID=90023755