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Subject
- Geographic Subject: Indiana4
- Topical Subject: Classification3
- Topical Subject: Roads3
- Topical Subject: Soils3
- Geographic Subject: Berrien County (Mich.)2
- Geographic Subject: Saint Joseph County (Ind.)2
- Topical Subject: Administrative and political divisions2
- Geographic Subject: Dubois County (Ind.)1
- Geographic Subject: Kentucky1
- Geographic Subject: LaPorte County (Ind.)1
- Geographic Subject: Ohio County (Ind.)1
- Geographic Subject: Switzerland County (Ind.)1
- Geographic Subject: Vermillion County (Ind.)1
- Geographic Subject: Wabash River1
- Geographic Subject: Wabash River Valley1
- Topical Subject: Rivers1
- Topical Subject: Road materials1
- Topical Subject: Valleys1