The author is indebted to numerous people for their information
and comments but is particularly grateful to Sir Rodric Braithwaite,
Dr Lawson Brigham, Tim Daffern, Professor Simon Dixon, Mette
Frost, Michael Greenwood, David Jackson, Andrew Latham, Raﬁ q
Latta, Professor Frederic Lasserre, Dr Rob Mandley, Olav Stokke,
Claire Pinney (not least for her Russian translations), Professor Don
Rothwell and Derek Teevan.