"Anomalies gravimétriques Grands lacs (Région) Cartes." . . "Great Lakes Region." . . "Gravity anomalies Great Lakes Region (North America) Maps." . . "Grands lacs (Région)" . . "Canada" . . "Anomalies magnétiques Grands lacs (Région) Cartes." . . . . "Maps"@en . "Maps" . . . . . . . "Geological Society of America Map and Chart Series" . "Great Lakes area" . . "Great Lakes region Bouguer gravity map"@en . . "Great Lakes Region gravity and magnetic map sequence- MC-41 Great Lakes area" . "Great Lakes region gravity and magnetic map sequence, MC-41, Great Lakes area"@en . . . "GSA Map and Chart Series" . "Great Lakes region free air gravity map"@en . . . . . . . . . . . . . . . . . . "Great Lakes region total magnetic intensity map"@en . . . . "Magnetic anomalies." . . "Gravity anomalies." . . "Geophysics." . . "États-Unis" . . . . "Geophysics Great Lakes Region (North America) Maps." . . "Magnetic anomalies Great Lakes Region (North America) Maps." . . "Géophysique Grands lacs (Région) Cartes." . .