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50 (L) — 1939-1940
Early Motors and Cables, 224.
Earth Tremorsn Mining and, 215.
Economisers and Superheaters, 126.
Electric Cables and Fire Risks, 311.
Electric Lamps, 364.
Electric Power, 415.
Electric Shock Efforts, 309.
Electrical Apparatus, 174, 246.
Electrical Engineers, 348.
Electrical Transmission, 25, 327.
Electrical Units, 411.
Engineers and Team Spirit, 152.
Engineers in Industry, 25.
Equipment, Plant and, 283, 345.
European Coal Areas and Mining, 165, 183.
Examination Notes, Managers', 81, 97, 122, 337, 362.
Examination Notes, Surveyors', 66, 330.
Examination Results, 37, 263.
Explosibility of Coal Dusts, 193.
Explosives, 35, 78, 119, 127, 253, 393.
Explosives Report, 100.
Explosives Store, 110.
Explosives, Substitutes, 63.
Explosives, Use of, 41, 156, 179, 184, 205, 253, 385, 393, 414.
Exports, Coal, 27, 59, 103, 257.
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