39235
Brown, Steven E.
1994
OFS94-15.2
Brown, S. E., 1994, Natural gamma-ray log profiles and map showing locations of data points, Gary 7.5 minute quadrangle, Indiana: Indiana Geological Survey Open-File Report 94-15.2, scale 1:24,000.
Indiana Geological & Water Survey - Open-File Study 1994-15.2
Marker lat / long: 41.562538, -87.312506 (WGS84)