Bouguer Anomaly Gravity Map of Wisconsin Geophysics Data and Resources M053 Bouguer Anomaly Gravity Map of Wisconsin Ervin, C.P.; Hammer, S.; 1974 Map: Scale 1:500,000; scanned onto two pages Download M053-text Text to Accompany Bouguer Anomaly Gravity Map of Wisconsin Ervin, C.P.; Hammer, S.; 1974 Report: 13 p. Download Related Collections Map View Map