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48 (XLVIII) — 1937-1938
Value of Carbonisation, 284.
Value of X-ray, 248.
Valves, Steam, 319.
Ventilating Door, 189, 389.
Ventilation, 36, 113, 135, 138, 190, 222, 237, 286, 287, 312, 392.
Ventilation Definitions, 15.
Ventilation Regulations, 61.
Ventilation, Compound, 319.
Ventilation, Efficiency, 31.
Ventilation, Mersey Tunnel, 291.
Views, Exhibition, 169.
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