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- Poland--Armed forces--Pictorial works1
- Pulque industry--Mexico--History1
- Quarries and quarrying--New Hampshire1
- Railroads--Peru1
- Railroads--South America1
- Rivers--Africa, East--Pictorial works1
- Salt industry and trade1
- Salt industry and trade--New York (State)1
- Sheep--Pictorial works1
- Steel industry and trade--Pennsylvania--Pittsburgh--History1
- Valleys--Switzerland--Pictorial works1
- Waterfalls--Argentina1
- Yarn1