. . . . "Inventions, improvements, and practice of Benjamin Thompson, in the combined character of colliery engineer, and general manager : with some interesting particulars relative to Watt's steam engine, and a short treatise on the coal trade regulation"@en . . . . . . . . . . "Early works"@en . . . . "Inventions, improvements, and practice of Benjamin Thompson, in the combined character of colliery engineer, and general manager with some interesting particulars relative to Watt's steam engine, and a short treatise on the coal trade regulation"@en . . . . . "Inventions, improvements, and practice of Benjamin Thompson in the combined character of colliery engineer and general manager with some interesting particulars relative to Watt's steam engine and a short treatise on the coal trade regulation" . . . "Inventions, improvements, and practice of Benjamin Thompson, in the combined character of colliery engineer, and general manager with some interesting particulars relative to Watt's steam engine, and a short treatise on the coal trade regulation" . . . "Inventions, improvements and practice of Benjamin Thompson in the combined character of coliery engineer and general manager with some interesting particulars relative to Watt's steam engine and a short treatise on the coal trade regulation"@en . . . . . "Charbon Mines et extraction." . .