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- Geomagnetism--Ontario--Bagot (Township)--Maps1
- Geomagnetism--Ontario--Belmont (Township)--Maps1
- Geomagnetism--Ontario--Calabogie Region--Maps1
- Geomagnetism--Ontario--Peterborough (County)--Maps1
- Iron mines and mining--Ontario--Bagot (Township)--Maps1
- Iron mines and mining--Ontario--Belmont (Township)--Maps1
- Iron mines and mining--Ontario--Calabogie Region--Maps1
- Iron mines and mining--Ontario--Peterborough (County)--Maps1
- Iron ores--Ontario--Bagot (Township)--Maps1
- Iron ores--Ontario--Belmont (Township)--Maps1
- Iron ores--Ontario--Calabogie Region--Maps1
- Iron ores--Ontario--Peterborough (County)--Maps1
