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Subject
- Geographic Subject: Bartholomew County (Ind.)4
- Geographic Subject: Johnson County (Ind.)4
- Geographic Subject: Brown County (Ind.)2
- Geographic Subject: Shelby County (Ind.)2
- Topical Subject: Geomagnetism2
- Topical Subject: Vegetation mapping2
- Geographic Subject: Daviess County (Ky.)1
- Geographic Subject: Dubois County (Ind.)1
- Geographic Subject: Elkhart County (Ind.)1
- Geographic Subject: Indiana1
- Geographic Subject: Lake County (Ind.)1
- Geographic Subject: Porter County (Ind.)1
- Geographic Subject: Spencer County (Ind.)1
- Geographic Subject: Warrick County (Ind.)1