- Twentieth Century Inventions
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- An Easy Method of Managing Bees
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- Develop in Swift AP CS Principles
- Develop in Swift Fundamentals
- Epistola de Heloysa a Abaylard
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- Develop in Swift AP CS Principles Teacher Guide
- Develop in Swift Data Collections
- Mysteries of Bee-keeping Explained
- Hittel on Gold Mines and Mining
- Hittel on Gold Mines and Mining
- Develop in Swift Explorations Teacher Guide
- Develop in Swift AP CS Principles Teacher Guide
- Peat and its Uses as Fertilizer and Fuel
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- Develop in Swift AP CS Principles
- Narrative of a Survey of the Intertropical and Western Coasts of Australia
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- Develop in Swift Explorations Teacher Guide
- Develop in Swift Data Collections Teacher Guide
- Develop in Swift Data Collections Teacher Guide
- Develop in Swift Explorations
- On Horsemanship
- Develop in Swift AP CS Principles Teacher Guide
- Develop in Swift Explorations
- Develop in Swift Data Collections
- Develop in Swift AP CS Principles
- Develop in Swift Data Collections Teacher Guide
- The Way to God and How to Find It
- The Elements of Agriculture
- Develop in Swift Fundamentals Teacher Guide
- The Dominion of the Air; the story of aerial navigation