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Light and truth : Martin's invention for destroying all foul air and fire damps in coal pits, and making the foulest pits as pure as the surface of this earth, provided it has fair play
- "Light and truth : Martin's invention for destroying all foul air and fire damps in coal pits, and making the foulest pits as pure as the surface of this earth, provided it has fair play"@en
- "Light and truth Martin's invention for destroying all foul air and fire damps in coal pits, and making the foulest pits as pure as the surface of this earth, provided it has fair play"
- "Light and truth Martin's invention for destroying all foul air and fire damps in coal pits, and making the foulest pits as pure as the surface of this earth, provided it has fair play"@en