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Subject
- Topical Subject: Road materials[remove]12
- Topical Subject: IGS Annual Reports11
- Geographic Subject: Indiana6
- Topical Subject: Gravel4
- Topical Subject: Quarries and quarrying4
- Topical Subject: Macadam roads2
- Topical Subject: Mines and mineral resources2
- Geographic Subject: Bartholomew County (Ind.)1
- Geographic Subject: Clark County (Ind.)1
- Geographic Subject: Dearborn County (Ind.)1
- Geographic Subject: Decatur County (Ind.)1
- Geographic Subject: Floyd County (Ind.)1
- Geographic Subject: Fountain County (Ind.)1
- Geographic Subject: Greene County (Ind.)1
- Geographic Subject: Harrison County (Ind.)1
- Geographic Subject: Jackson County (Ind.)1
- Geographic Subject: Jefferson County (Ind.)1
- Geographic Subject: Jennings County (Ind.)1
- Geographic Subject: Monroe County (Ind.)1
- Geographic Subject: Montgomery County (Ind.)1