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55 (LV) — 1944-1945
D.C. Motor, 143.
Decimal Fractions, 193, 205, 218.
Diffusion of Gases, 15.
Dimensions of Low and High Pressure Cylinders, 311.
Direct Haulage and Safety Devices, 45, 274.
Distance between Shafts, 154.
Distribution of Errors, 217.
Division of Land, 125.
Divisional Inspectors Reports, 117, 232, 244, 260, 272, 288, 289.
Dobb, the late Mr. T. G., 223.
Duchess of Kent Visits Horden Colliery, 105.
Durham Coalfield, Regional Survey, 244.
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