'... based on lectures delivered at the Technological Congress at Savoy Place, London, on the 18th and 19th May 1971.' - note.
Electrical science and engineering in the service of man : I.E.E. centenary lectures, 1871-1971; with a congratulatory message from H.M. the Queen and an introduction by Lord Hailsham by Institution of Electrical Engineers. ISBN 0852960433. Published by Institution of Electrical Engineers in 1971. Publication and catalogue information, links to buy online and reader comments.