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Subject
- Mapa geológico1
- Natural gas pipeline compressor stations1
- Natural gas pipelines1
- Natural resources1
- Nautical charts Niagara River (N.Y. and Ont.)1
- Oil wells1
- Petroleum1
- Petroleum pipelines1
- Petroleum refineries1
- Phytogeography1
- Quaternaire1
- Quaternary Geologic Period1
- Recursos minerais1
- Roads1
- Silver mines and mining1
- Soils1
- Street-railroads1
- Sédiments (géologie)1
- Water-supply1
