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Subject
- Land use, Rural23
- Mines and mineral resources15
- Geology7
- Water resources development5
- Forest reserves3
- Aeronautical charts1
- Cartes1
- Cities and towns1
- Coal1
- Coal mines and mining1
- Coal reserves1
- Forests and forestry1
- GeĢologie1
- Gold mines and mining1
- Government publications1
- Highway planning1
- Indian reservations1
- Indians of North America1
- Karte1
- Land capability for agriculture1
