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49 (XLIX) — 1938-1939
Gas Outbreak, 173.
Gas Producers, 167.
Gas testing, 96.
Gas, Cleaving Out, 381.
Gas, Where Prevalent, 121.
Gaseous Diffusion, 209.
Gases, Density of, 231.
Gases, Mine, 63.
Gasification, Coal, Underground, 244.
General Regulations, 69.
Geological Survey, 144.
Geological Terms, 80.
Gob-fires, 103, 286.
Griffiths, John, 295.
Growers, Pit Prop, 364.
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