CORRESPONDENCE. THE ELECTRICAL HEATING AND VENTILATION OF BOURNE AND HOLLINGSWORTH'S PREMISES, OXFORD STREET. Free

MESSRS. BOURNE & HOLLINGSWORTH, ELECTRICAL, HEATING, VENTILATION, BUILDINGS, TEMPERATURE, AIR, HUMIDITY, CONTROL, ELECTRICITY, SUPPLY, SOLID, FUEL, GAS, OIL, ECONOMICS, COOLING, RECIRCULATION, OXFORD STREET, LONDON, UK, INDIA